Excluding stoppages, the speed of a bus is 82 kmph and including stoppages, it is 75 kmph. For how many minutes does the bus stop per hour?
Choose one:
A) 5.12
B) 4.13
C) 6.15
D) 7.5
E) none of these

Rationale: "due to stoppages , it covers 7 km less . time taken to cover 7 km = ( ( 7 / 82 ) ã — 60 ) = 5.12 min . option ( a ) is correct"
Answer: A