Question

Excluding stoppages, the speed of the bus is 54kmph and including stoppages, it is 45kmph. for how many minutes does the bus stop per hour?

Answer 1

Excluding stoppage,  speed of bus=54km/h Including stoppage,  Speed of bus=45km/h  Due to stoppage, it covers=54-45=9km/h,   Time taken to cover 9km=9/54*60=10mint.   The bus stop per hour is 10minutes.