Excluding stoppages, the speed of a bus is 52 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?
Choose the correct choice from the following options.
A) 7 min
B) 6 min
C) 9 min
D) 8 min
E) 11 min

Rationale: "due to stoppages , it covers 7 km less . time taken to cover 7 km = ( 7 / 52 ) x 60 = 8 min answer : d"
Answer: D