Average Questions of Quantitative Aptitude ( Maths) for Competitive Exams. Topic wise Average question and answer with solution from the previous year exam question paper of SSC CGL, CPO, CHSL, RRB, bank. Practice Set is useful for upcoming NRA CET, UPSSSC PET and other Govt jobs examinations.
Basic Average Questions
Q1. Average runs scored by 11 players of a cricket team is 23 runs. If the first player scored 113 runs. Find the average runs of the remaining players.
1) 8 Runs
2) 12 Runs
3) 14 Runs
4) 27 Runs
Q2. The average weight of 15 oarsmen in a boat is increased by 1.6 kg when one of the crew, who weighs 42 kg, is replaced by a new man. Find the weight of the new man (in kg).
1) 67
2) 65
3) 66
4) 43
Q3. The average marks of 50 students in a class is 72. The average marks of boys and girls in that subject are 70 and 75 respectively. The number of boys in the class is
1) 20
2) 35
3) 25
4) 30
Q4. The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. The weight of the new person is
1) 84 Kg
2) 85 Kg
3) 76 Kg
4) 76.5 Kg
Q5. Six friends have an average height of 167 cm. A boy with height 162 cm leaves the group. Find the new average height.
1) 168 cm
2) 166 cm
3) 169 cm
4) 167 cm
Q6. The average of 1, 3, 5, 7, 9, 11, ………… to 25 terms is
1) 125
2) 25
3) 625
4) 50
Q7. The average of some natural numbers is 15. If 30 is added to first number and 5 is subtracted from the last number the average becomes 17.5 then the number of natural number is
1) 15
2) 30
3) 20
4) 10
Q8. There are 100 students in 3 sections A, B and C of a class. The average marks of all the 3 sections were 84. The average of B and C was 87.5 and the average marks of A is 70. The number of students in Section A was
1) 30
2) 35
3) 20
4) 25
Q9. The average of all the numbers between 6 and 50 which are divisible by 5 is
1) 27.5
2) 30
3) 28.5
4) 22
Q10. The average of 20 numbers is 15 and the average of first five is 12. The average of the rest is
1) 16
2) 15
3) 14
4) 13
Q11. The average of 8 numbers is 27. If each of the numbers is multiplied by 8, find the average of new set of numbers.
1) 1128
2) 938
3) 316
4) 216
Q.12: 4 boys and 3 girls spent 120 on the average, of which the boys spent 150 on the average. Then the average amount spent by the girls is :
a) ₹ 80
b) ₹ 60
c) ₹ 90
d) ₹ 100
Q.13: The mean of 9 observations is 16. One more observation is included and the new mean becomes 17. The 10th observation is :
a) 9
b) 16
c) 26
d) 30
Q.14: 12 kg of rice costing ₹ 30 per kg is mixed with 8 kg of rice costing ₹ 40 per kg. The average per kg price of mixed rice is :
a) ₹ 38
b) ₹ 37
c) ₹ 35
d) ₹ 34
Q.15: The average of 30 results is 20 and the average of other 20 results is 30. What is the average of all the results?
a) 24
b) 48
c) 25
d) 50
Q.16: The average of the marks obtained in an examination by 8 students was 51 and by 9 other students were 68. The average marks of all 17 students were :
a) 59
b) 59.5
c) 60
d) 60.5
To Find nth Number When Average of First ‘p’ and Last ‘q’ Numbers are Given
Q.17: Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number is 20 then the first number is ?
a) 23
b) 25
c) 28
d) 21
Q.18: The average of 13 results is 70. The average of first seven is 65 and that of the last seven is 75, the seventh result is :
a) 67
b) 70
c) 68
d) 70.5
Q.19: The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest?
a) 15
b) 15.2
c) 14
d) 14.5
Q.20: Out of four numbers, the average of the first three is 18 and that of the last three is 16. If the last number is 19, the first is :
a) 19
b) 18
c) 20
d) 25
Q.21: The average of three numbers is 135. The largest number is 195 and the difference between the other two is 20. The smallest number is :
a) 65
b) 105
c) 95
d) 115
Q.22: The average of eight successive numbers is 6.5. The average of the smallest and the greatest numbers among them will be :
a) 4
b) 6.5
c) 7.5
d) 9
Average of Consecutive Even, Odd and Prime Numbers
Q.23: The average of five consecutive positive integers is n. If the next two integers are also included, then the average of all these integers will :
a) Increased by 1.5
b) Increased by 1
c) Remain the same
d) Increase by 2
Average of five consecutive numbers =
New average after adding two numbers =
Difference in average = (a+3)-(a+2) = 1
Q.24: The average of the first nine integral multiples of 3 is :
a) 12
b) 15
c) 18
d) 21
Numbers are => 3(1+2+3+….+9)
Sum =
Average = 135/9 = 15
Q.25: The average of odd numbers up to 100 is :
a) 49
b) 49.5
c) 50
d) 50.5
Q. 26: The average of nine consecutive odd numbers is 53. The least odd number is :
a) 22
b) 27
c) 35
d) 45
Average Monthly Income : Questions for Competitive Exams
Q.26: The average expenditure of a man for the first five months is 1200 and for the next seven months is ₹ 1300. If he saves ₹ 2900 in that year, his monthly average income is :
a) ₹ 1400
b ₹ 1500
c) ₹ 1600
d) ₹ 1700
Q.27: The average salary of all the workers in a workshop is ₹ 8000. The average salary of 7 technicians is ₹ 12,000 and the average salary of the rest is ₹ 6000. The total number of workers in the workshop is :
a) 20
b) 21
c) 22
d) 23
Average (Maths) Questions for Competitive Exams
Twice, Thrice, One-Third, etc., of Numbers.
Q.28: Of the three numbers, the first is 4 times the second and 3 times the third. If the average of all the three numbers is 95, what is the third number?
a) 57
b) 76
c) 130
d) 60
Q. 29: Of the three numbers, the first number is twice the second and the second is thrice the third number. If the average of these 3 numbers is 20, then the sum of the largest and the smallest numbers is :
a) 24
b) 42
c) 54
d) 60
Q. 30: Of the three numbers, the first is twice the second and the second is twice the third. The average of three numbers is 21. The smallest of the three numbers is :
a) 6
b) 9
c) 12
d) 18
Average Questions with solutions for Competitive Exams
Correct Average for mistake done earlier
Q.31: The average marks of a class of 35 children is 35. The marks of one of the students, who got 35, was incorrectly entered as 65. What is the correct average of the class?
a) 34.14
b) 28.20
c) 42.21
d) 38.14
Q.32: The average marks secured by 36 students were 52. But it was discovered that an item 64 was misread as 46. What is the correct mean of marks?
a) 52.0
b) 52.5
c) 53.0
d) 53.5
Cricket Based : Average Questions for Competitive Exams
Q.33: A batsman makes a score of 87 runs in the 17th innings and thus increases his average by 3. Find his average after 17th innings.
a) 33
b) 39
c) 84
d) 90
Q.34: The average run of a player is 32 out of 10 innings. How many runs must he make in the next innings so as to increase his average by 6?
a) 6
b) 38
c) 40
d) 98
Q. 35: The batting average for 30 innings of a cricket player is 40 runs. His highest score exceeds his lowest score by 100 runs. If these two innings are not included, the average of the remaining 28 innings is 38 runs. The lowest score of the player is :
a) 12
b) 15
c) 18
d) 20
Q. 36: The bowling average of a cricketer was 12.4. He improves his bowling average by 0.2 points when he takes 5 wickets for 26 runs in his last match. The number of wickets taken by him before the last match was :
a) 125
b) 150
c) 175
d) 200
Let wicket taken before last match = A
⇒ 12.4A+ 26 = 12.2A + 61
⇒ 0.2A = 61 − 26 = 35
⇒ A = 175
Average MCQ Questions for Competitive Exams
Finding the Missing Number and Change of Average
Q. 37: Average weight of 25 students of a class is 50 kg. If the weight of the class teacher is included, the average is increased by 1 kg. The weight of the teacher is :
a) 74 kg
b) 75 kg
c) 76 kg
d) 77 kg
Q.38: The average of five numbers is 7. When three new numbers are included, the average of the eight numbers becomes 8.5. The average of three new numbers is :
a) 9
b) 10.5
c) 11
d) 11.5
Determining the Average Age : Average Questions for Competitive Exams
Q.38: The average age of a mother and her six children is 12 years, which is reduced by 5 years if the age of the mother is excluded. The age of the mother (in years) is :
a) 40
b) 42
c) 48
d) 50
Q.39: The average age of a mother and her six children is 12 years, which is reduced by 5 years if the age of the mother is excluded. The age of the mother (in years) is :
a) 40
b) 42
c) 48
d) 50
Q.40: The average age of a husband and his wife was 23 years at the time of their marriage. After five years they have a one year old child. The average age of the family now is
a) 19 years
b) 23 years
c) 29.3 years
d) 28.5 years
Q.41: Three years ago the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family remains the same today. The age of the baby today is :
a) 1 year
b) 2 years
c) 3 years
d) 1.5 years
Q.42: A person travels by car from city A to city B at an average speed of 63 Km/h and returns at an average speed of 42 Km/h. His average speed for the whole journey?
a) 52.5 Km/h
b) 55.4 Km/h
c) 48.5 Km/h
d) 50.4 Km/h
If the distance covered is the same, then the average speed=
Average Speed =
=50.4 Km/hThanks for attempt Average Questions for Competitive Exams.
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