Question 2
Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour ?
Solution
calculation based on per hour travel of the bus
due to stoppages, it covers 9km less i.e (54 - 45)
so time taken to cover 9km = ( $$\frac{9}{54}\times60$$ )mins = 10 mins
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