Math Quizzes

Average age of a group of 30 boys is 16 years. A boy of age 19 leaves the group and a new boy joins the group. If the new average age of the group is 15.8 years, find the age of the new boy.

Ramesh borrowed Rs. 3600 at a certain rate of interest C.I. and the sum grows to Rs. 4624 in 2 years. What is the rate of interest?

On a certain sum of money the compound interest Rs. 318 is earned in 2 years. If the rate of interest is 12%, what is the principal amount?

What should be added to 1459 so that it is exactly divisible by 12?

What smallest number should be subtracted from 9805 so that it is divisible by 8?

The average of Sohan’s marks in 6 subjects is 74. If his average in five subjects excluding science is 70, how many marks he obtained in science?

10 typists can type 600 pages in 8 hours.Find the average number of pages typed by each typist in an hour.

Given that 1+2+3+.. +9 = 45, find the value of (11+12+13+..+19).

The average of 6 numbers is 45. What is their total sum?

Find the average of 15, 20, 25, 30, and 35.

On lending a certain sum of money on C.I. one gets Rs.9050 in 2 years and Rs.9500 in 3 years. What is the rate of interest?

If the average of three consecutive even numbers is 34, find the largest of these numbers.

The average of 10, 20, and 30 is:

The simple interest on a certain sum of money at rate of interest 5% per annum for 2 years is Rs. 500. What is the compound interest on the same sum for the same period and at the same rate of interest?

Average of five numbers is 20. If each number is multiplied by 2, what will be the new average?

In how many years the compound interest on Rs. 10000 at the rate of 10% will be Rs. 2100 ?

7X2 is a three digit number and X is the missing digit. If the number is divisible by 6, the missing digit is

Which of the following numbers is divisible by 9?

What is the average of the first five multiples of 12?

Find the number of three-digit numbers which are divisible by 6.