Question

a tank is filled by 2 pipes in 20 minutes and 30 respectively.after opening the pipes when we should turn of the 1st pipe,so that tank will fill in 10 minutes​

Answer 1

Answer:

A motor pump can fill a tank in 8 minutes and

there is a tap that can empty it in 7 minutes. If

the tank already have one-fourth filled and both

the pump and tap is opened together, when will

the tank emptied?A motor pump can fill a tank in 8 minutes and

there is a tap that can empty it in 7 minutes. If

the tank already have one-fourth filled and both

the pump and tap is opened together, when will

the tank emptied?A motor pump can fill a tank in 8 minutes and

there is a tap that can empty it in 7 minutes. If

the tank already have one-fourth filled and both

the pump and tap is opened together, when will

the tank emptied?A motor pump can fill a tank in 8 minutes and

there is a tap that can empty it in 7 minutes. If

the tank already have one-fourth filled and both

the pump and tap is opened together, when will

the tank emptied?A motor pump can fill a tank in 8 minutes and

there is a tap that can empty it in 7 minutes. If

the tank already have one-fourth filled and both

the pump and tap is opened together, when will

the tank emptied?A motor pump can fill a tank in 8 minutes and

there is a tap that can empty it in 7 minutes. If

the tank already have one-fourth filled and both

the pump and tap is opened together, when will

the tank emptied?