A bus covers a certain distance at a speed of 54 kmph excluding stoppages and 45 kmph including stoppages.for how many minutes does the bus stop per hour?  Answers.
A) 5 min.
B) 10 min.
C) 15 min.
D) 20 min.
E) 30 min.
Due to stoppages, it covers 9 km less.   Time taken to cover 9 km =	9/54	x 60	min	= 10 min.   ANSWER:10 min.
<result>B</result>
A bus covers a certain distance at a speed of 54 kmph excluding stoppages and 45 kmph including stoppages.for how many minutes does the bus stop per hour?