Raman was going to Bangalore to Chennai on a Bus. He found out that including stoppages, the speed of the bus is 36 kmph and excluding stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?
Solution: Due to stoppages, it covers 9 km less.
Time taken to cover 9 km = (9/45) * 60
= 12 min.
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