Two-fifth of one-fourth of three-seventh of a number is 15. When is half of that number?

A truck covers a distance of 550 metres in 1 minute where as a bus covers a distance of 33 kms in 45 minutes....

A sum of Tk. 312 was divided among 100 boys and girls in such a way that each boy gets Tk. 3.60 and each girl...

The compound interest on a certain sum for 2 years at 10% per annum is Tk. 525. The simple interest on the sam...

The angle between the minute hand and the hour hand of a clock when the time is 8.30, is :

The sum of the ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the yo...

Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opended togeth...