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

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

A 10

B 9

C 12

D 20

Solution

Correct Answer: Option A

Due to stoppages, it covers 9 km less.

Time taken to cover 9 km, (9/54)x 60min= 10 min.