Sum of two numbers is 60 and their difference is 12. Find their product.

Find the sum of all natural numbers between 100 and 175.

If 2/7 of a number increased by 25 gives 45 find the number.

Which of the following numbers should be added to 11158 to make it exactly divisible by 77?

The sum of two numbers is 85 and their difference is 9. What is the difference of their squares?

A number gets reduced to its one-third when 48 is subtracted from it. What is two-third of that number?

Piyush takes a loan of ₹ 10000. After 1 yr, he takes another loan of ₹10000 at double the rate of interest. If he has to pay interest at simple rate of interest and settles the loan by paying ₹ 23600 at the end of two years, what is the initial rate of interest he has to pay?

The average weight of 30 students in a class is 60 kg. When 20 new students are admitted, the average weight is reduced by 2 kg. Find the average weight of the new students.

Naresh puts ₹ 10000 at interest compounded annually for 2yr. Had he invested it at 1% more rate of interest compounded annually, he would have earned ₹ 209 more. What is the interest rate?