A man walks on a straight road from his home to market 2.5km away with – McqOptions

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1.	A man walks on a straight road from his home to market 2.5km away with a speed of 5 km/h. Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km/h. The average speed of the man over the interval of time 0 to 40 min. is equal to -
A.	5 km/h
B.	25/4 km/h
C.	30/4 km/h
D.	45/8 km/h
Answer» E.

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