A man bought some eggs of which 10% are rotten. He gives 80% of the remainder to his neighbors. Now he is left out with 36 eggs. How many eggs he bought?

The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Th...

The sum of the ages of the father and son is 80 years. If ten years ago the age of father was three times that...

The monthly incomes of two persons are in the ratio 4:5 and their monthly expenditures are in the ratio of 7:9...

Simple interest on a certain sum at the rate of 4.5% p.a. for 4 years and 6 years differs by BDT 216. The sum...

If the product of three consecutive integers is 210, then the sum of integers is

In a right triangle, the length of one of the legs is 3 and the length of the hypotenuse is 5. What is the len...