If m and n are whole numbers such that

A pump can fill a tank with water in 2 hours . Because of a leak , it took hours to fill the tank.The leak can...

The difference between simple and compound interest on a sum of money at 20% per annum for 3 years is Tk. 48....

If A and B are in the ratio 3 : 4 and B and C in the ratio 12 :13 then A and C will be in the dratio-

A bag contains an equal number of one rupee , 50 paisa and 25 paisa coins . If the total value is TK. 35 , how...

If 40% of a number is equal to two -third of another number, what is the ratio of first number to the second n...

A man starts climbing a 11 m high wall at 5 pm. In each minute he climbs up 1m but slips down 50 cm. At what t...