After 56 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 C

Given:

After 56 litres of petrol was poured, the tank was still 10% empty.

Formula used:

Total capacity of the tank =$$\frac{\text{ Petrol poured }}{\text{ (1 - Fraction of tank filled)}}$$​​

Solution:

Total capacity of the tank = $$\frac{56 }{ (1 - 0.10)}$$​​
Total capacity $$= \frac {56 }{ 0.90}$$​​
Total capacity = 62.22 litres