Question

A drum of petrol is 3/4 full. When 30 litres of oil are drawn from it, it is 7/12 full. Find the capacity of the drum.​

Answer 1

let total volume be x

3x/4 -30 = 7x/12

3x/4 - 7x/12 =30

2x/12 = 30

x = 180