Excluding stoppages, the speed of a bus is 58 kmph and including stoppages, it is 40 kmph. For how many minutes does the bus stop per hour? Choose the correct choice:
A) 19	B) 19.13	C) 10.5	D) 11.35	E) none of these

Rationale: "due to stoppages , it covers 18 km less . time taken to cover 18 km = ( ( 18 / 58 ) ã — 60 ) = 19 min . option ( a ) is correct"
Answer: A