Excluding the stoppages, the speed of a bus is 32 km/hr and including the stoppages the speed of the bus is 16 km/hr. For how many minutes does the bus stop per hour? Choose the correct option:  A) 15 min  B) 10 min  C) 12 min  D) 30 min  E) 18 min
Speed of the bus without stoppage=32 km/hr   Speed of the bus with stoppage=16km/hr   30 minifference in speed=16 km/hr   so,the time taken in the stoppages = time taken to cover 16 km=(16/32)hr = 1/2 hr =30 min   ANSWER:30 min
<result>D</result>
Excluding the stoppages, the speed of a bus is 32 km/hr and including the stoppages the speed of the bus is 16 km/hr. For how many minutes does the bus stop per hour?