The 5-Second Average Challenge! 🎯

Question 1

The average of three numbers is 28. The first number is half of the second and the third number is twice the second. What is the third number?

MCQ

36 48 18 24

Question 2

A batsman makes a score of 87 runs in the 17th inning and thus increases his average by 3. Find his average after the 17th inning.

MCQ

45 42 39 36

Question 3

In a class of 50 students, the average age is 15 years. 10 new students join and the average age increases by 0.2 years. What is the average age of new students?

MCQ

16.2 Years 16 Years 17 Years 15.5 Years

Question 4

The average age of 30 boys in a class is 15 years. One boy, aged 20 years, left the class, but two new boys came in his place whose age differs by 5 years. If the average age of all the boys now in the class becomes 15 years, find the age of the younger newcomer.

MCQ

12 Years 15 Years 8 Years 10 Years

Question 5

Average of 20 numbers is zero. At most, how many of them can be greater than zero?

MCQ

0 10 19 1

Question 6

The average age of a husband and wife was 23 years at the time of their marriage. After 5 years they have a 1-year old child. The average age of the family now is:

MCQ

23 Years 28.5 Years 21 Years 19 Years

Question 7

The average age of 24 students is 12 years. If the teacher's age is included, the average increases by 1. What is the teacher's age?

MCQ

37 Years 36 Years 39 Years 38 Years

Question 8

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. What might be the weight of the new person?

MCQ

85 kg 80 kg 75 kg 70 kg

Question 9

The average weight of 10 oarsmen in a boat is increased by 1.8 kg when one of the crew, who weighs 53 kg is replaced by a new man. Find the weight of the new man.

MCQ

68 kg 71 kg 70 kg 61 kg

Question 10

The average mark of 6 subjects is 65. If a student's mark in a 7th subject is added, the new average becomes 67. How many marks did he score in the 7th subject?

MCQ

81 79 83 77

Question 11

The average age of 8 men is increased by 2 years when two of them whose ages are 21 years and 23 years are replaced by two new men. What is the average age of the two new men?

MCQ

28 Years 24 Years 22 Years 30 Years

Question 12

The average salary of 15 workers is ₹2,800. If the manager's salary is added, the average increases by ₹100. Find the manager's salary.

MCQ

₹4,400 ₹4,500 ₹4,600 ₹4,300

Question 13

The average of 5 numbers is 27. If one number is excluded, the average becomes 25. What is the excluded number?

MCQ

30 25 27 35

Question 14

The average of 7 consecutive numbers is 20. The largest of these numbers is:

MCQ

20 22 24 23

Question 15

Average of 11 results is 50. If the average of first six results is 49 and that of last six is 52, find the sixth result.

MCQ

52 56 50 54