Excluding stoppages, the speed of a bus is 60 kmph and including stoppages, it is 54 kmph. For how many minutes does the bus stop per hour?
Answer & explanation
Correct answer: option 2
The average speed (including stoppages) = 54 km/h
Distance = speed × time
So in 1 hr, distance traveled = 54 km
The average speed (excluding stoppages) = 60 km/h
At this speed, time is taken by bus to travel 54 km = \(\frac{54}{60}\)
= \(\frac{9}{10}\)
= 54 minutes.
So at a speed of 60 km/h, the bus can travel a distance of 54 km every 54 minutes.
For every Hour, the bus stops for = 60 - 54
= 6 minutes
So , The bus stops per hour for 6 min.