Excluding stoppages the speed of a bus is 54 km h and including stoppages it is 45 km h For how many...........

Quantitative Aptitiude (CLAT) Time & distance

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

Explanation:

Speed of bus without stoppage = 54 kmph
Speed of bus with stoppage = 45 kmph
Here, the bus travels (54 – 45) = 9km less per hour due to stoppages.
Time taken to travel 9 km
= 9 + 1 hr or 10 min.
54 6
Thus, the bus stops 10 min per hour on the stoppages.
Hence, option B is correct.