Given
Distance covered by car in 5 hours =180 km
Hence time taken by the car to cover 54 km distance can be calculated as below
Time is taken by the car to cover 180 km distance =5 hours
Time is taken by the car to cover 1 km distance =5/180 hour
Time taken to cover 54 distance by car =5/180×54
=1.5 hours
∴ Time taken to cover 54 km distance by the car is 1.5 hours