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

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

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

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

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?

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

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?

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

Out of total income, a family spends 30% on house rent. It spends 50% of house rent on ration. Of the balance it spends 30% on education. What percentage of total income is left?