Average with Explanation

Q8. The average of six consecutive even numbers is 25. Find the difference between highest and lowest numbers?

A. 10 B. 8
C. 6 D. 12

Q9. The average score of a cricketer for ten matches is 36.8 If the average for the first five matches is 40, then find the average of the last five matches?

A. 43.5 B. 40.65
C. 42 D. 44.25

Q10. There are three numbers such that the average of the first and second number is smaller than the average of the second and third by 15. Find the difference between the third and first number?

A. 40 B. 35
C. 45 D. 30

Q11. In a school with 600 students, the average age of the boys is 12 years, and that of the girls is 11 years. If the average age of the school is 11 years 9 months, then the number of girls in the school is

A. 150 B. 175
C. 200 D. 145

Q12. The bowling average for 40 innings of a cricket player is 40 wickets. Her highest wickets exceed her lowest wickets by 10 wickets. If these two innings are removed, the average of the remaining 38 innings is 38 wickets. The lowest wicket of the bowler is

A. 98 B. 88
C. 78 D. 68

Q13. 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. 22 years B. 27.5 years
C. 29.3 years D. 19 years

Q14. The marks of the pupil were wrongly entered as 83 instead of 63. Due to that, the average marks for the class got increased by half. How many pupils are present in the class?

A. 35 B. 30
C. 40 D. 45