Question

An electric pump can fill a tank in 3 hours. because of a leak at the bottom of the tank it is taking 3.5 hours to fill the tank. find the time the leak can drain all the water of the tank when it is full?

Answer 1

Part of tank filled by the pump in one hour = 1/3
Let, Part of the tank emptied by the leak = x
so, in 3.5 hours,
3.5(x+1/3) = 1 ( 1 means whole tank is filled)
x+1/3 = 10/35
x= 1/21
21 X 1/21 = 1 
To completely empty the tank it will take 21 hours

Answer 2

Answer:

Step-by-step explanation: