Question

A leak in the bottom of the tank can empty the full tank in 12 hours and inlet pipe fills water @ 6 liters a minute and the tank is full when the english is open for 8 hours how many litres does the cistern hold

Answer 1

let the total volume of tank=x L
amount of water leaked in one hour= x/12 L
amount of water filled in one hour by inlet= 6*60=360 L
amount of water stored in one hour= 360-x/12
Thus, {360-(x/12)}*8=x
=> 2880=x-(2x/3)
x=4320L