A bus travelling at 72 km/h completes a journey in 15 hours. At what speed will it have to cover the same distance in 12 hours?

Correct option is A

Given:

Speed = 72 km/h

Time = 15 hours

New time = 12 hours

Formula Used:

Distance = Speed × Time

Solution:
Total Distance covered =  $$72 \times 15$$  km​

New Speed $$= \frac{72 \times 15}{12}$$ =  90 km/hr​​

The required speed is 90 km/h