Excluding stoppages the average speed of a bus is 60 km hr and including stoppages the average speed...........

Quant (SSC) Time & distance

Excluding stoppages, the average speed of a bus is 60 km/hr and including stoppages, the average speed of the bus is 40 km/hr. For how many minutes does the bus stop per hour?

30 min

25 min

35 min

20 min

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Explanation:

In 1hr, the bus covers 60 km without stoppages and 40 km with stoppages.
Stoppage time = time take to travel (60 - 40) km i.e 20 km at 60 km/hr.
stoppage time = 20/60 hrs = 20 min.

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