A person rides a bicycle round a circular path of radius 50 m. The radious of the wheel of the bicycle is 50 cm. The cycle comes to the starting point for the first time in 1 hour. what is the number of revolutions of the revolutions of the wheel in 15 minutes?

In covering a certain distance , the speeds of A and B are in the ratio of 3 : 4. A takes 30 minutes more than...

Two lots of onions with equal quantity, one costing Tk. 10 per kg and the other costing Tk. 15 per kg are mixe...

A and B are partners in a business A contributes 1/4 of the capital for 15 months and B receives 2.3 of the pr...

If 6 men and 8 boys can do a piece of work in 10 days and 26 men and 48 boys can do the same in 2 days , the t...

Pipe A alone can fill a tankin 8 hours .Pipe B can fill it in 6 hours . If both the pipes are operated and aft...

A train of length 150 m takes 10 seconds to cross another train 100 m long coming from the opposite direction...