In a hostel, there is enough food for 50 students to last for 30 days. After 6 days 25 more students are admitted to the hostel. Now, how many more days the food is going to last?

Anil can do a work in 12 days. Basheer can do it in 15 days. Chandran can do the same work in 20 days. If they all work together, the number of days need to complete the work is?

3/8 is what part of 1/12:

A car can finish a journey in 10 hours at a speed of 48 kmph. In order to cover the same distance in 8 hours the speed

of the car must be increased by :

At what percentage per annum will a sum of money double in 8 years :

In the series one term is wrong. Find the wrong term :

(a)1/2,1, 3, 12, 60, 300, 2520