Time and Distance Q.11

0. 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?

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Option : B
Explanation : Due to stoppages, it covers 9 km less.
Time taken to cover 9 km = 9/54 × 60 min = 10 min

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