Question

From a barrel that contains pure alcohol, 10% alcohol is withdrawn and replaced with water. If the same process is repeated once more, then the quantity of alcohol remaining in the mixture would be 81 litres. Find the final quantity of water in the barrel.

A 20 litres
B 19 litres
C 24 litres
D 10 litres
E None of these
Practice Next

Hey! Ask a query