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Average MCQs

Solved Average MCQs with answers and explanations. Free practice questions for PPSC, FPSC, CSS and other government job exams on FreeSekho.

1. Find the average of: 10, 20, 30, 40, 50.
1. 32
2. 35
3. 28
4. 30 ✓
2. Find the average of: 12, 18, 24, 30, 36.
1. 24 ✓
2. 29
3. 26
4. 22
3. Find the average of: 5, 10, 15, 20, 25.
1. 15 ✓
2. 13
3. 20
4. 17
4. Find the average of: 8, 12, 16, 20, 24.
1. 14
2. 18
3. 21
4. 16 ✓
5. Find the average of: 14, 16, 18, 20, 22.
1. 23
2. 18 ✓
3. 20
4. 16
6. Find the average of: 25, 30, 35, 40.
1. 32.5 ✓
2. 30.5
3. 34.5
4. 37.5
7. Find the average of: 6, 9, 12, 15, 18.
1. 17
2. 10
3. 14
4. 12 ✓
8. Find the average of: 11, 13, 15, 17, 19.
1. 13
2. 15 ✓
3. 20
4. 17
9. Find the average of: 20, 40, 60, 80.
1. 48
2. 55
3. 50 ✓
4. 52
10. Find the average of: 7, 14, 21, 28, 35.
1. 26
2. 21 ✓
3. 19
4. 23
11. Find the average of: 18, 22, 26, 30, 34.
1. 26 ✓
2. 24
3. 28
4. 31
12. Find the average of: 100, 120, 140, 160.
1. 130 ✓
2. 132
3. 135
4. 128
13. Find the average of: 9, 11, 13, 15, 17.
1. 11
2. 18
3. 13 ✓
4. 15
14. Find the average of: 4, 8, 12, 16, 20, 24.
1. 14 ✓
2. 12
3. 16
4. 19
15. Find the average of: 30, 35, 40, 45, 50.
1. 38
2. 42
3. 40 ✓
4. 45
16. Find the average of: 15, 25, 35, 45.
1. 32
2. 28
3. 30 ✓
4. 35
17. Find the average of: 2, 6, 10, 14, 18.
1. 10 ✓
2. 15
3. 12
4. 8
18. Find the average of: 50, 55, 60, 65, 70.
1. 60 ✓
2. 65
3. 62
4. 58
19. Find the average of: 16, 24, 32, 40.
1. 33
2. 30
3. 26
4. 28 ✓
20. Find the average of: 3, 6, 9, 12, 15, 18.
1. 12.5
2. 15.5
3. 10.5 ✓
4. 8.5
21. Find the average of: 22, 24, 26, 28, 30.
1. 31
2. 24
3. 28
4. 26 ✓
22. Find the average of: 45, 50, 55, 60.
1. 52.5 ✓
2. 54.5
3. 57.5
4. 50.5
23. Find the average of: 13, 17, 21, 25, 29.
1. 26
2. 23
3. 21 ✓
4. 19
24. Find the average of: 10, 15, 20, 25, 30, 35.
1. 22.5 ✓
2. 27.5
3. 24.5
4. 20.5
25. Find the average of: 40, 45, 50, 55, 60.
1. 48
2. 55
3. 50 ✓
4. 52
26. Find the average of: 7, 8, 9, 10, 11.
1. 7
2. 14
3. 9 ✓
4. 11
27. Find the average of: 21, 23, 25, 27, 29.
1. 30
2. 23
3. 25 ✓
4. 27
28. Find the average of: 60, 70, 80, 90.
1. 75 ✓
2. 73
3. 77
4. 80
29. Find the average of: 5, 15, 25, 35, 45.
1. 30
2. 23
3. 25 ✓
4. 27
30. Find the average of: 12, 24, 36, 48.
1. 28
2. 35
3. 32
4. 30 ✓
31. Find the average of: 18, 21, 24, 27, 30.
1. 29
2. 22
3. 26
4. 24 ✓
32. Find the average of: 100, 200, 300, 400, 500.
1. 305
2. 298
3. 302
4. 300 ✓
33. Find the average of: 6, 12, 18, 24, 30.
1. 20
2. 23
3. 18 ✓
4. 16
34. Find the average of: 31, 33, 35, 37, 39.
1. 33
2. 37
3. 35 ✓
4. 40
35. Find the average of: 10, 20, 40, 50.
1. 32
2. 28
3. 30 ✓
4. 35
36. Find the average of: 14, 28, 42, 56.
1. 40
2. 37
3. 35 ✓
4. 33
37. Find the average of: 9, 18, 27, 36.
1. 22.5 ✓
2. 20.5
3. 27.5
4. 24.5
38. Find the average of: 80, 85, 90, 95, 100.
1. 92
2. 88
3. 90 ✓
4. 95
39. Find the average of: 11, 22, 33, 44, 55.
1. 38
2. 31
3. 33 ✓
4. 35
40. Find the average of: 4, 7, 10, 13, 16.
1. 12
2. 8
3. 15
4. 10 ✓
41. The marks of 5 students are 60, 65, 70, 75 and 80. Find their average marks.
1. 68
2. 72
3. 70 ✓
4. 75
42. A student scored 55, 65, 75 and 85 in four tests. What is the average score?
1. 72
2. 70 ✓
3. 65
4. 75
43. The average marks of 10 students are 72. Find their total marks.
1. 720 ✓
2. 740
3. 710
4. 700
44. The total marks of 25 students are 1,750. Find the average marks.
1. 68
2. 70 ✓
3. 75
4. 65
45. The average marks of a class of 30 students are 60. Find the total marks.
1. 1900
2. 1600
3. 1800 ✓
4. 1700
46. A teacher records total marks of 1,200 for 20 students. Find the class average.
1. 60 ✓
2. 65
3. 55
4. 58
47. The average of 8 students is 75. What is their combined score?
1. 560
2. 600 ✓
3. 620
4. 580
48. The average score of 15 students is 64. Find the total score.
1. 980
2. 960 ✓
3. 900
4. 940
49. A class has total marks of 2,400 for 40 students. What is the average?
1. 58
2. 55
3. 65
4. 60 ✓
50. The average marks of 12 students are 80. If one more student scores 90, find the new average.
1. 81
2. 82
3. 80
4. 80.77 ✓
51. The average of 20 students is 50. A new student scoring 70 joins them. Find the new average.
1. 52
2. 50.95 ✓
3. 51
4. 50
52. The average age of 10 students is 16 years. Find their total age.
1. 180
2. 160 ✓
3. 170
4. 150
53. The average age of 15 students is 18 years. Find their combined age.
1. 270 ✓
2. 260
3. 250
4. 280
54. The average height of 8 students is 165 cm. Find the total height.
1. 1280
2. 1320 ✓
3. 1350
4. 1300
55. The average salary of 6 employees is Rs. 45,000. Find their total salary.
1. Rs. 250,000
2. Rs. 270,000 ✓
3. Rs. 280,000
4. Rs. 260,000
56. The total monthly income of 12 workers is Rs. 600,000. Find the average income.
1. Rs. 50,000 ✓
2. Rs. 48,000
3. Rs. 55,000
4. Rs. 45,000
57. Five students have an average of 68 marks. What is their total marks?
1. 350
2. 320
3. 340 ✓
4. 330
58. The average of 18 candidates is 55. Find the total marks.
1. 1000
2. 900
3. 950
4. 990 ✓
59. A teacher finds that 25 students have an average attendance of 90 days. Find total attendance-days.
1. 2300
2. 2250 ✓
3. 2150
4. 2000
60. The average score of 7 players is 42. Find their total score.
1. 294 ✓
2. 290
3. 280
4. 300
61. The average of 9 test scores is 80. What is their sum?
1. 720 ✓
2. 700
3. 710
4. 740
62. The average marks of 50 students are 66. Find the total marks.
1. 3250
2. 3200
3. 3400
4. 3300 ✓
63. A class average is 74 for 30 students. Find the total marks.
1. 2100
2. 2220 ✓
3. 2250
4. 2200
64. The average age of 20 persons is 25 years. Find their total age.
1. 520
2. 450
3. 500 ✓
4. 480
65. The average weight of 10 boxes is 18 kg. Find total weight.
1. 160
2. 170
3. 180 ✓
4. 190
66. The average score of 16 students is 75. Find their total score.
1. 1150
2. 1200 ✓
3. 1100
4. 1250
67. A group of 40 people has an average age of 30 years. Find their combined age.
1. 1200 ✓
2. 1250
3. 1150
4. 1100
68. The total of 14 observations is 560. Find the average.
1. 35
2. 45
3. 40 ✓
4. 38
69. The total of 35 numbers is 2,100. Find their average.
1. 58
2. 60 ✓
3. 55
4. 65
70. The sum of 24 values is 1,800. Find their average.
1. 75 ✓
2. 72
3. 80
4. 70
71. The average of 5 numbers is 20. Four numbers are 15, 18, 22 and 25. Find the fifth number.
1. 19
2. 20 ✓
3. 18
4. 22
72. The average of 4 numbers is 30. Three numbers are 20, 35 and 40. Find the fourth number.
1. 25 ✓
2. 35
3. 20
4. 30
73. The average of x, 12 and 18 is 15. Find x.
1. 15 ✓
2. 16
3. 12
4. 14
74. The average of 6, 8, 10, 12 and x is 10. Find x.
1. 12
2. 14 ✓
3. 15
4. 16
75. The average of 5 numbers is 18. Four numbers are 12, 16, 20 and 22. Find the fifth.
1. 18
2. 19
3. 21
4. 20 ✓
76. The mean of 7 numbers is 25. Their total is therefore:
1. 160
2. 180
3. 175 ✓
4. 170
77. The average of 8 observations is 32. If seven observations total 210, find the eighth.
1. 46 ✓
2. 44
3. 48
4. 40
78. The average of 10 numbers is 15. Nine of them total 130. Find the tenth.
1. 15
2. 18
3. 22
4. 20 ✓
79. The average marks of 6 students are 70. Five students scored 60, 65, 70, 75 and 80. Find the sixth score.
1. 68
2. 65
3. 70 ✓
4. 75
80. The average of 4 numbers is 25. If one number is 40 and the other three are equal, find each of the other three.
1. 18
2. 20 ✓
3. 15
4. 22
81. The average of 3 numbers is 18. Two numbers are 12 and 20. Find the third.
1. 18
2. 20
3. 22 ✓
4. 24
82. The average of 6 numbers is 14. Five numbers total 60. Find the remaining number.
1. 26
2. 20
3. 24 ✓
4. 22
83. The average of 5 values is 30. One value 40 is removed. Find the average of the remaining values.
1. 25
2. 30
3. 28
4. 27.5 ✓
84. The average of 8 numbers is 25. One number 32 is removed. Find the new average.
1. 23
2. 25
3. 24 ✓
4. 26
85. The average of 10 students is 60. If a student scoring 80 leaves, find the average of the remaining 9 students.
1. 60
2. 57.78 ✓
3. 56
4. 58
86. The average age of 5 people is 24 years. One person aged 30 leaves. Find the new average.
1. 24
2. 21
3. 22.5 ✓
4. 23
87. The average marks of 20 students are 70. One student with 90 marks leaves. Find the new average.
1. 70
2. 68.95 ✓
3. 68
4. 69
88. The average of 12 numbers is 40. One value 64 is removed. Find the average of remaining 11.
1. 39
2. 38
3. 37
4. 37.82 ✓
89. The average of 9 observations is 30. If one observation 18 is removed, find the new average.
1. 32
2. 30
3. 31.5 ✓
4. 31
90. The average of 7 numbers is 22. Replacing 10 by 24 changes the average to:
1. 24.5
2. 24 ✓
3. 23
4. 25
91. The average of 5 students is 60. If one student's score 50 is corrected to 70, the new average is:
1. 64 ✓
2. 62
3. 65
4. 63
92. A class average of 30 students is 65. One mark was wrongly entered as 40 instead of 70. What is the correct average?
1. 67
2. 66.5
3. 66 ✓
4. 65
93. The average of 10 values is 50. If every value increases by 5, the new average is:
1. 52
2. 50
3. 60
4. 55 ✓
94. The average of 12 values is 40. If every value decreases by 8, the new average is:
1. 34
2. 36
3. 30
4. 32 ✓
95. The average of 15 numbers is 20. If each number is multiplied by 3, the new average is:
1. 50
2. 60 ✓
3. 40
4. 65
96. The average of 8 values is 25. If each value is divided by 5, the new average is:
1. 4
2. 7
3. 5 ✓
4. 6
97. The average of 6 numbers is 30. If each number is increased by 20%, the new average is:
1. 35
2. 36 ✓
3. 40
4. 34
98. The average of 5 values is 40. If each is reduced by 25%, the new average is:
1. 25
2. 35
3. 30 ✓
4. 32
99. The average of 4 numbers is 50. If 10 is added to each number, find the new average.
1. 58
2. 60 ✓
3. 55
4. 65
100. The average of 20 values is 100. If each value is reduced by 10%, the new average is:
1. 95
2. 88
3. 85
4. 90 ✓
101. The average of 3 consecutive numbers is 24. Find the largest number.
1. 25 ✓
2. 26
3. 23
4. 24
102. The average of 5 consecutive integers is 30. Find the middle integer.
1. 28
2. 31
3. 29
4. 30 ✓
103. The average of 7 consecutive odd numbers is 21. Find the middle number.
1. 21 ✓
2. 20
3. 23
4. 19
104. The average of three consecutive even numbers is 16. Find the largest number.
1. 18 ✓
2. 16
3. 20
4. 17
105. The average of 5 consecutive numbers is 50. Find the first number.
1. 49
2. 47
3. 48 ✓
4. 45
106. The average of 4 consecutive even numbers is 15. Find the largest number.
1. 17
2. 18 ✓
3. 16
4. 20
107. The average of 5 consecutive odd numbers is 25. Find the smallest number.
1. 21 ✓
2. 19
3. 23
4. 20
108. If the average of 11 consecutive integers is 40, what is the sixth integer?
1. 41
2. 40 ✓
3. 39
4. 38
109. The average of 3 consecutive odd numbers is 15. Find the smallest.
1. 11
2. 14
3. 12
4. 13 ✓
110. The average of 6 consecutive integers is 25.5. Find the largest integer.
1. 27
2. 28 ✓
3. 29
4. 26
111. Group A has 10 students with average 60, and Group B has 20 students with average 70. Find the combined average.
1. 65
2. 67
3. 68
4. 66.67 ✓
112. A class of 15 boys has average marks 70 and 10 girls have average 80. Find the overall average.
1. 74 ✓
2. 75
3. 76
4. 72
113. The average age of 20 men is 30 and of 10 women is 25. Find the combined average.
1. 27
2. 29
3. 28
4. 28.33 ✓
114. A team of 8 players averages 25 points and another team of 12 players averages 30 points. Find combined average.
1. 28.5
2. 27
3. 29
4. 28 ✓
115. Section A has 30 students averaging 50 marks and Section B has 20 averaging 65 marks. Find combined average.
1. 58
2. 54
3. 56 ✓
4. 55
116. A group of 5 workers earns an average of Rs. 40,000 and another 10 workers average Rs. 50,000. Find combined average.
1. Rs. 45,000
2. Rs. 47,000
3. Rs. 48,000
4. Rs. 46,667 ✓
117. 10 students average 80 and 15 students average 60. Find the average of all 25 students.
1. 68 ✓
2. 70
3. 66
4. 72
118. The average weight of 12 boxes is 20 kg and of 8 boxes is 30 kg. Find combined average weight.
1. 24 ✓
2. 22
3. 26
4. 25
119. Group A contains 25 persons with average age 40; Group B contains 15 persons with average age 30. Find combined average.
1. 36.25 ✓
2. 38
3. 35
4. 37
120. 20 workers average Rs. 35,000 and 30 workers average Rs. 45,000. Find overall average salary.
1. Rs. 42,000
2. Rs. 40,000
3. Rs. 41,000 ✓
4. Rs. 39,000
121. The average of 6 numbers is 15 and of another 4 numbers is 25. Find the average of all 10 numbers.
1. 18
2. 19 ✓
3. 21
4. 20
122. A school has 100 boys averaging 70 marks and 50 girls averaging 80 marks. Find school average.
1. 72
2. 73.33 ✓
3. 74
4. 75
123. The average of 18 players is 22 years and that of 12 players is 25 years. Find combined average age.
1. 22.5
2. 23
3. 23.2 ✓
4. 24
124. Class X has 40 students averaging 55; Class Y has 60 students averaging 65. Find combined average.
1. 61 ✓
2. 60
3. 63
4. 62
125. A batch of 7 trainees averages 40 and another batch of 3 averages 60. Find overall average.
1. 44
2. 48
3. 46 ✓
4. 50
126. The average salary of 25 employees is Rs. 50,000 and of 5 managers is Rs. 100,000. Find combined average salary.
1. Rs. 55,000
2. Rs. 58,333 ✓
3. Rs. 62,000
4. Rs. 60,000
127. 12 boys average 18 years and 8 girls average 16 years. Find the average age of all.
1. 18
2. 16.8
3. 17
4. 17.2 ✓
128. A group of 50 students averages 72. Another 50 averages 68. Find combined average.
1. 71
2. 69
3. 68
4. 70 ✓
129. The average score of 30 candidates is 45 and of 20 candidates is 60. Find overall average.
1. 52
2. 51 ✓
3. 50
4. 54
130. 15 workers average 8 hours daily and 5 workers average 10 hours daily. Find combined average.
1. 9
2. 9.5
3. 8.5 ✓
4. 8
131. A team of 9 players averages 30 points and a reserve group of 6 averages 20. Find overall average.
1. 25
2. 24
3. 27
4. 26 ✓
132. 40 students average 75 marks while 10 students average 55 marks. Find combined average.
1. 72
2. 73
3. 70
4. 71 ✓
133. The average of 16 values is 18 and of 24 values is 30. Find combined average.
1. 25.2 ✓
2. 24
3. 25
4. 26
134. Group A: 10 people, average income Rs. 20,000. Group B: 30 people, average Rs. 30,000. Find combined average.
1. Rs. 28,000
2. Rs. 27,500 ✓
3. Rs. 25,000
4. Rs. 30,000
135. The average age of 6 children is 10 and of 4 adults is 40. Find overall average age.
1. 22 ✓
2. 24
3. 25
4. 20
136. 25 students average 64 and another 25 average 76. Find combined average.
1. 70 ✓
2. 68
3. 72
4. 74
137. A factory has 80 workers averaging 35 units and 20 workers averaging 50 units. Find average production.
1. 40
2. 36
3. 42
4. 38 ✓
138. 10 students average 90 and 40 students average 60. Find overall average.
1. 66 ✓
2. 64
3. 70
4. 68
139. A group of 4 has average 25 and another group of 6 has average 35. Find combined average.
1. 31 ✓
2. 30
3. 29
4. 32
140. 30 employees average Rs. 40,000 while 20 average Rs. 55,000. Find combined average.
1. Rs. 45,000
2. Rs. 46,000 ✓
3. Rs. 44,000
4. Rs. 48,000
141. A group of 8 has average 12 and a group of 12 has average 18. Find overall average.
1. 15
2. 14
3. 15.6 ✓
4. 16
142. The average of 50 observations is 30 and of another 50 observations is 50. Find combined average.
1. 40 ✓
2. 45
3. 38
4. 42
143. A team of 5 averages 16 and a team of 15 averages 24. Find combined average.
1. 20
2. 22 ✓
3. 21
4. 23
144. 12 students average 50 and 18 students average 70. Find combined average.
1. 65
2. 64
3. 62 ✓
4. 60
145. The average weight of 30 men is 70 kg and of 20 women is 60 kg. Find combined average.
1. 66 ✓
2. 65
3. 64
4. 68
146. A class of 20 averages 75 and another class of 30 averages 65. Find combined average.
1. 69 ✓
2. 71
3. 70
4. 68
147. The average of 10 numbers is 100 and of 20 numbers is 50. Find the combined average.
1. 70
2. 66.67 ✓
3. 60
4. 65
148. 15 people average 20 years and 5 people average 40 years. Find overall average.
1. 24
2. 28
3. 26
4. 25 ✓
149. A group of 25 has average 80 and a group of 75 has average 60. Find combined average.
1. 62
2. 68
3. 65 ✓
4. 64
150. Two equal-sized groups have averages 40 and 60. Find their combined average.
1. 55
2. 48
3. 50 ✓
4. 45
151. The average age of a father and son is 30 years. If the father is 50, find the son's age.
1. 10 ✓
2. 8
3. 12
4. 15
152. The average age of 4 friends is 22 years. If their ages total 88, find the average after adding a fifth friend aged 27.
1. 23 ✓
2. 24
3. 25
4. 22
153. The average age of 5 members is 30. A member aged 40 is replaced by one aged 25. Find the new average.
1. 27 ✓
2. 28
3. 26
4. 29
154. A cricket player's average after 10 innings is 45. How many total runs has he scored?
1. 470
2. 400
3. 430
4. 450 ✓
155. A batsman has scored 600 runs in 15 innings. Find his average runs per inning.
1. 40 ✓
2. 45
3. 38
4. 35
156. The average speed for a journey of 3 hours at 40 km/h and 2 hours at 60 km/h is:
1. 45
2. 48 ✓
3. 52
4. 50
157. A worker works 8 hours for 5 days and 10 hours for 2 days. Find average working hours per day.
1. 9
2. 8.57 ✓
3. 8
4. 8.5
158. The average monthly expense for 6 months is Rs. 30,000. Find total expense.
1. Rs. 190,000
2. Rs. 170,000
3. Rs. 160,000
4. Rs. 180,000 ✓
159. A family spends Rs. 40,000, Rs. 45,000 and Rs. 50,000 in three months. Find average monthly spending.
1. Rs. 45,000 ✓
2. Rs. 47,000
3. Rs. 50,000
4. Rs. 42,000
160. A shop's daily sales for 4 days are Rs. 20,000, Rs. 25,000, Rs. 30,000 and Rs. 35,000. Find average daily sales.
1. Rs. 27,500 ✓
2. Rs. 30,000
3. Rs. 25,000
4. Rs. 28,000
161. The average rainfall over 5 days is 12 mm. Find total rainfall.
1. 60 ✓
2. 50
3. 65
4. 55
162. A student's average in 5 subjects is 80. What total marks must be obtained?
1. 400 ✓
2. 390
3. 420
4. 380
163. The average of the first 10 natural numbers is:
1. 5.5 ✓
2. 5
3. 6
4. 10
164. The average of the first 20 natural numbers is:
1. 10
2. 11
3. 10.5 ✓
4. 20
165. The average of the first 10 even numbers is:
1. 12
2. 11 ✓
3. 20
4. 10
166. The average of the first 10 odd numbers is:
1. 12
2. 11
3. 10 ✓
4. 9
167. The average of numbers from 1 to 99 is:
1. 50 ✓
2. 49
3. 49.5
4. 51
168. The average of 10, 20, 30, 40 and 50 is:
1. 30 ✓
2. 25
3. 40
4. 35
169. The average of two numbers is 25. If one number is 18, find the other.
1. 31
2. 30
3. 35
4. 32 ✓
170. The average of three numbers is 40. Two numbers are 35 and 45. Find the third.
1. 38
2. 35
3. 40 ✓
4. 45
171. The average of 4 numbers is 50. If three are 40, 50 and 60, find the fourth.
1. 45
2. 50 ✓
3. 55
4. 60
172. The average age of a couple is 28. If a child aged 4 is included, find the new average.
1. 18
2. 20 ✓
3. 22
4. 21
173. The average of 6 numbers is 25. If a new number 35 is added, find the new average.
1. 27
2. 26.43 ✓
3. 25.5
4. 28
174. The average of 9 numbers is 18. If a number 36 is added, find the new average.
1. 20
2. 21
3. 19
4. 19.8 ✓
175. The average of 10 values is 30. If two values totaling 80 are added, find the new average.
1. 30
2. 32
3. 31.67 ✓
4. 33
176. A group of 12 has average 15. If 3 new members each have value 25, find new average.
1. 18
2. 19
3. 17 ✓
4. 16
177. The average of 8 observations is 50. If two observations 60 and 70 are added, find new average.
1. 52
2. 54
3. 55
4. 53 ✓
178. The average score of 20 students is 60. If 5 students each scoring 80 join, find new average.
1. 64 ✓
2. 66
3. 62
4. 65
179. A class of 25 students has average 70. If 5 students each scoring 50 leave, find new average.
1. 74
2. 76
3. 72
4. 75 ✓
180. The average of 30 values is 40. If 10 values each equal to 50 are removed, find the average of remaining values.
1. 36
2. 35 ✓
3. 37
4. 34
181. The average of 5 numbers is 30. The average of the first 3 is 25 and of the last 3 is 35. Find the middle number.
1. 35
2. 25
3. 30 ✓
4. 28
182. The average of 4 numbers is 20. If each is doubled and then 5 is added to each, the new average is:
1. 42
2. 40
3. 45 ✓
4. 50
183. The average of x and 30 is 25. Find x.
1. 22
2. 15
3. 20 ✓
4. 18
184. The average of 3x, 5x and 7x is 30. Find x.
1. 6 ✓
2. 7
3. 5
4. 8
185. The average of 4 consecutive odd numbers is 20. Find the smallest.
1. 15
2. 18
3. 17 ✓
4. 16
186. The average of 8 consecutive integers is 24.5. Find the smallest.
1. 21 ✓
2. 23
3. 20
4. 22
187. The average of 5 consecutive even numbers is 32. Find the largest.
1. 38
2. 36 ✓
3. 35
4. 34
188. The average of 7 consecutive numbers is 100. Find their total.
1. 650
2. 680
3. 700 ✓
4. 720
189. The average marks of 10 students is 65. If the highest mark 95 is replaced by 75, the new average is:
1. 64
2. 63 ✓
3. 62
4. 65
190. The average of 15 numbers is 40. If each number is increased by 25%, the new average is:
1. 55
2. 50 ✓
3. 48
4. 45
191. A value is wrongly recorded as 80 instead of 50 in a set of 20 observations. The calculated average is 40. Find the correct average.
1. 38.5 ✓
2. 40
3. 39
4. 38
192. The average of 25 observations is 60. If one observation 100 was omitted, what was the average of the remaining 24 observations?
1. 57
2. 58.33 ✓
3. 58
4. 60
193. A student needs an average of 70 in 5 tests. He scores 60, 65, 70 and 75 in the first four. What score is needed in the fifth?
1. 75
2. 78
3. 80 ✓
4. 85
194. The average of 10 numbers is 25. If the average of 4 of them is 20, find the average of the remaining 6.
1. 28.33 ✓
2. 30
3. 27
4. 28
195. The average of 12 students is 50. If 2 students with average 80 are removed, find the average of the remaining 10.
1. 42
2. 46
3. 44 ✓
4. 45
196. The average age of 30 students is 18. If a teacher aged 48 joins them, find the new average age.
1. 18.5
2. 20
3. 18.97 ✓
4. 19.5
197. The average of 6 values is 40. If the average of 2 values is 25, find the average of the other 4.
1. 48
2. 50
3. 45
4. 47.5 ✓
198. The average score of a player after 9 games is 40. What score in the 10th game will raise the average to 45?
1. 90 ✓
2. 85
3. 95
4. 80
199. The average of 8 numbers is 30. What number should be added as the ninth number to make the average 35?
1. 80
2. 72
3. 70
4. 75 ✓
200. A group of 10 has average 50. How many points must be added to the total to raise the average to 55?
1. 45
2. 40
3. 50 ✓
4. 60