Question

A drum of kerosene oil is 3/4 full. When 15 litres of oil is drawn from it, it is 7/12 full.Find the total capacity of the drum ?

Answer 1

90 litres.

Explanation:

Let the total capacity be `x`.

According to the question,
`(3x/4)-15=(7x/12)`

`(3x-60)/4=(7x/12)`

`3x-60(12)=(7x)×4`

`36x-720=28x`
`36x-28x=720`
`8x=720`
`x=90`