After 58 litres of petrol was poured into an empty storage tank, it was still 10% empty. How much petrol (in litres, rounded off to two decimal place) must be poured into the storage tank in order to fill it?

Correct option is A

Given:

58 litres of petrol was poured into an empty storage tank, and it is still 10% empty.

Concept Used:

If the tank is 10% empty, it is 90% full after pouring in 58 litres.
Let the total capacity of the tank be x litres.
The amount of petrol in the tank represents 90% of the total capacity.

Solution:

0.9 × x = 58
x = 58 / 0.9
Amount required to fill the tank = x - 58

Find the total capacity of the tank:
x = 58 / 0.9 = 64.44 litres