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 ?
Option:
A. 20
B. 12
C. 10
D. 9
Answer: C . 10
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Justification:
Due to stoppages, it covers 9 km less.
Time taken to cover 9 km
= (9/54) * 60 min
= 10 min
