Excluding stoppages, the speed of a bus is 70 kmph and including stoppages, it is 56 kmph. For how many minutes does the bus stop per hour?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 12 min
Excluding stoppages, the speed of a bus = 70 kmph
So distance covered by bus in 1 hour = 70 km
Including stoppages, the speed of a bus = 56 kmph
So distance covered by bus in 1 hour = 56 km
⇒ 70 - 56 = 14 km
If the bus kept going without stopping, it would have been covered 14 km more with the speed of 70 kmph.
Time taken to cover 14 km = (14/70) × 60 = 12 minutes.