Question

a drum of kirosin oil is 3/4 fill . when 15 lit oil is drawn from it , 7/12 filled, what is 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.