Tank P contains 3 times as much water as Tank Q. How much water must be transfer
from Tank P to Tank Q so that each tank contains 30 litres of water?
A 30 litres
B 20 litres
C 15 litres
D 25 litres
Tank P contains 3 times as much water as Tank Q. How much water must be transfer
from Tank P to Tank Q so that each tank contains 30 litres of water?
A 30 litres
B 20 litres
C 15 litres
D 25 litres