Answer:
720 miles
Explanation:
A car uses 8.4 liters of petrol for a 112 mile journey.
In 1 litres =
of journey
We need to find far should the car be able to travel on a full tank of petrol i.e. 54 litres of petrol.

So, the car can travel 720 miles when it holds 54 lirres of petrol.