Excluding stoppage, the speed of the bus is 72 km per hour and including…
2026
Excluding stoppage, the speed of the bus is 72 km per hour and including stoppage it is 60 km per hour. For how many minutes does the bus stop per
- A.
15 minutes
- B.
12 minutes
- C.
20 minutes
- D.
10 minutes
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Show answer & explanation
Correct answer: D
Solution:
Assume the total time (including stoppage) is 1 hour. At the effective speed including stoppage (60 km/h), the bus covers 60 km in that hour.
If there were no stoppages during the same total time, at the running speed (72 km/h) it would cover 72 km in that hour.
The distance not covered because of stoppage = 72 km − 60 km = 12 km.
Time lost due to stoppage = (distance lost) / (running speed) = 12 km / 72 km/h = 1/6 hour = 10 minutes.
Answer: 10 minutes