Question

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



9



10



12



20

Answer 1

initial 54km = 60min

final. 45km = 60 min

so 54-45 =9km less travelled

if 54km = 60min

than 1km = 60/54

multiply both side by 9

so 9km = (54/60)*9

= 10min ans