Question

A leak in the bottom of a tank can empty it in 12 hrs. A tap which can added 20 litre per minute is turn on

Answer 1

for example

inlet alone take ''x'' hrs to fill the tank

Now, ( inlet+leak) in 1 hrs= -1/12(emptying)

I.e. 1/x+(-1/8)= -1/12

1/x= -1/12+1/8

1/x = 1/24

X= 24 hrs

1 min = 6liters

(24*60) min = ?

6*60*24= 8640 liters