1.

Two pipes together can fill a cistern in 36 hours. If another draining pipe attached to the tank, it takes 9 hours longer to fill the tank. Find in how much time can the drain pipe alone can empty a half full tank.1). 180 hours2). 90 hours3). 315 hours4). Can’t be determined

Answer»

Pipes

Units of water = 180(LCM of 36 and 45)

A + B = 36

5

A + B + C = 45

4

C

(-1)

 

C drains out one UNIT of water in one hour

Capacity of the tank = 180

Half the capacity of the tank = 90

TIME required to EMPTY the half-filled tank = 90/1 = 90 hours



Discussion

No Comment Found

Related InterviewSolutions