BPSC PRELIMS BOOSTER MATH QUIZ- 4

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Question 1:

The average of five consecutive even numbers is M. If the next five even numbers are also included, the average of ten numbers will be:

Question 2:

A family have grandparents, parents and three childrens. The average age of the grandparents is 69 years that of the parents is 37 years and that of the children is 5 years what is the average of the family.

Question 3:

Numbers of boys and girls in a class are 130 and 156 respectively. Average Age of girls and boys are $14.5$ years and $13.4$ years respectively. The average age (in years) of all boys and girls is

Question 4:

The average of the 17 consecutive positive integers is 71 . The product of the largest and smallest integer is

Question 5:

An hour-long test has 80 problems. If a student completes 45 problems in 39 minutes, then the required time (in seconds) he should take on an average for solving each of the remaining problems is:

Question 6:

In an organization number of males and females are 145 and 116 respectively. Average Age of females and males are $28.5$ years and $31.2$ years respectively. The average age (in years) of all males and females is:

Question 7:

Vishal's average batting score in 12 innings is 62 runs. He scores some runs in the next innings and his average score increases by 5 runs. If he scores 20 runs more than the 13th inning, then what will be his average in 13 innings'?

Question 8:

Vishal has an average batting score in 12 innings is 62 runs. He scores some runs in next innings and his average score increases by 5 runs. If he scores 20 runs more from the 13th innings, then find what would be his batting average of 13 innings?

Question 9:

The average of twelve numbers is $45.5 .$ The average of the first four numbers is $41.5$ and that of the next five numbers is 48. The $10^{\text {th }}$ number is 4 more than the $11^{\text {th }}$ number which is 9 more than the $12^{\text {st }}$ number. What is the average of the $10^{\text {th }}$ and $12^{\text {th }}$ numbers ?

Question 10:

The average weight of some students in a class was $58.4 \mathrm{~kg}$. When 5 students having the average weight $62.8 \mathrm{~kg}$ joined the class, the average weight of all students in the class increased by $0.55 \mathrm{~kg}$. The number of students initially in the class were.