If a train runs at 40 kmph, it reaches its destination late by 11 minutes but if it runs at 50 kmph, it is late by 5 minutes only. The correct time for the train to complete its journey is :

Every 3 minutes, 4 liters of water are poured into a 2,000, liter tank. After 2 hours, what percent of the tan...

if y/x = 1/3 and x + 2y =10, then x is-

Ten years ago, A was half of B in age. If the ratio of their present age is 3 : 4, what will be the total of t...

The least number by which 294 must be multiplied to make it a perfect square, is :

A sum of Tk. 12,500 amounts to Tk. 15,500 in 4 years at the rate of simple interest. What is the rate of inter...

Some persons can do a piece of work in 12 days. Two times the number of such persons will do half of that work...