Answer:
6 litres
Explanation:
In order to solve this problem, you can set up a proportion based on the given information:
The car uses 20 litres to cover 150 km.
Let's represent this as a ratio:

Now you want to find out how many liters the car will use to cover 45 km. Let's represent this as a proportion:

Set up the proportion:

Criss Cross-multiply:


Now, solve for x:


So, the same car would use 6 liters to cover a distance of 45 km.