Two pipes together can fill a reservoir in 12 hours. If one pipe can fill the reservoir 10 hours faster than the other, how many hours will the second pipe take to fill the reservoir ?

Two pipes running together can fill a cistern in 2 8/11 minutes. If one pipe takes 1 minute more than the other to fill the cistern, find the time in which each pipe would fill the cistern.

Two pipes running together can fill cistern in 6 minutes. One pipe takes 5 minutes more than the other to fill the cistern, find the time in which each pipe would fill the cistern.

Water is pouring into a cubiodal reservoir at the rate of 60 litres per minute. If the volume of reservoir is 108 m^3 , find the number of hours it will take to fill the reservoir.

Two water taps together can fill a tank in 9 3/8 hours. The tap of larger diameter takes 10 hours less than the smaller one to fill the tank separately. Find the time in which each tap can separately fill the tank.

A swimming pool is filled with three pipes with uniform flow. The first two pipes operating simultaneously, fill the pool in the same time during which the pool is filled by the third pipe alone. The second pipe fills the pool five hours faster than the first pipe and four hours slower than the third pipe. Find the time required by each pipe to fill the pool separately.

Two cars start together in the same direction at the same place.The first goes with the speed of 10km/hr. The second goes at the speed of 8 km/hr in the first hour and increases the speed by 1/2 km each succeeding hour. After how many hours will the second car overtake the first if both cars go non-stop ?

Two person can finish the work in 7 days. (i) One of the persons fell ill before the work started . How much time will the other person take to finish the same work. (ii) How many persons will be needed to finish the work in one day.