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Buses start from a bus terminal with a speed of 20 km/hr at intervals of 10 minutes. What is the speed of a man coming from the opposite direction towards the bus terminal if he meets the buses at intervals of 8 minutes?

Correct Answer: 5 kmph

Explanation:

Let p be the speed of man in kmph


According to the given data in the question,


Distance travelled by bus in 10 min with 20 kmph == Distance travelled by man in 8 min with (20 + p) kmph in opposite direction


=> 20 x 10/60 = 8/60 (20 + p)


=> 200 = 160 + 8p


=> p = 40/8 = 5 kmph.


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