Excluding stoppages, the speed of a bus is 84 kmph and including stoppages, it is 70 kmph. For how many minutes does the bus stop per hour?
Choose the correct choice from the following answers.
A) 12 min B) 10 min C) 15 min D) 14 min E) 13 min
Due to stoppages, it covers 14 km less.   Time taken to cover 14 km = (14/84 x 60) min = 10 min   Answer : 10 min
<result>B</result>
Excluding stoppages, the speed of a bus is 84 kmph and including stoppages, it is 70 kmph. For how many minutes does the bus stop per hour?