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.
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Answer 1

let full x

when ¾x full

left7/12x

after 15 liter drawn

capacity=

¾x-15=7/12x

3/4x-7/12x=15

1/6x=15

x=15×6

x=90litres

hope it helps you

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Answer 2

Answer:

90 litres.

Step-by-step explanation:

Let the total capacity be x.

According to the question,

(3x4)−15=(7x12)

3x−604=(7x12)

3x−60(12)=(7x)×4

36x−720=28x

36x−28x=720

8x=720

x=90