Question

A tank containing kerosene is 3 over 4 full. If 20% of the keroseneis removed. Find the amount of kerosene left in the tank

Answer 1

Answer:

90 litres.

Step-by-step explanation:

Let the total capacity be x.

(3x4)−15=(7x12)

3x−604=(7x12)

3x−60(12)=(7x)×4

36x−720=28x

36x−28x=720

8x=720

x=90