Question

From a cask, containing 450 litres of petrol, 8% of the petrol was lost by leakage and evaporation. How many litres of petrol was left in the cask?

Answer 1

Step 1: Calculate the volume of petrol lost

Original petrol in the cask = 450 litres

Leakage and evaporation = 8 %

∴ Lost petrol = 8 % of 450 litres `= (8 xx 450)/100` = 36 litres

Step 2: Calculate the remaining volume

The volume of petrol left in the cask is the initial volume minus the volume lost.

Remaining Volume = Initial Volume − Lost Volume

Remaining Volume = 450 litres − 36 litres = 414 litres

The amount of petrol left in the cask was 414 litres.