Two buses start from a bus terminal with a speed of 20 km h at interval of 10 minutes What is the sp...........

Quantitative Aptitude ( CCS) Time & distance

Two buses start from a bus terminal with a speed of 20 km/h at interval 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 interval of 8 minutes?

8km/hr

6km/hr

5km/hr

4km/hr

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Explanation:

Solution:
Let Speed of the man is x km/hr.
Distance covered in 10 minutes at 20 km/hr = distance covered in 8 minutes at (20+x) km/hr.
20*10/60 = 8/60(20+x)
200 = 160+8x
8x = 40
x = 5km/hr.