Question

a drum of kerosene is 3/4 full. When 30 litres of oil is drawn from it ,it is 7/12 full.Find the capacity of drum.

Answer 1

Let Capacity of Drum = X litres.

Initially, Drum was 3X/4 part filled.

30 litres oil drawn then it become, 7X/12 part.

Now, according to question,

3X/4 - 7X/12 = 30

(9X - 7X)/12 = 30

2X = 360

X = 180 litres.