A certain tank has water filled to $\frac{1}{5}$ of it's capacity. A persons opens a tap and allows the tank to fill upto to $\frac{3}{4}$ of it's capacity. Then he uses the water in the tank and finally $\frac{1}{3} $ water remains in the tank.
What I have found :
Water that was added to the tank after opening the tap : $\frac{11}{20}$
Fraction of water he used was : $\frac{5}{12}$
Total capacity of water in the tank : 1800 litres
Problem:
Find the amount water he used up in litres
How many more litres remained in the tank in the end when compared to the beginning
