Instructions

For the following questions answer them individually

Question 42

If 3/5 th of a cistern is filled in 1 minute, how much more time will be required to fill the rest of it?

Question 45

The difference between the compound interest and simple interest on a sum of money at rate of 10% per anurn for 2 years is Rs 50. The Principal amount is :

Question 48

A boatman goes 2 km against the current of the stream in 1 hour and goes 1km along the current in 10 minutes. How1,long will it take to go 5 km. in stationary water?