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A man walks on a straight road from his ...

A man walks on a straight road from his home to a market 2.5 km 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

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

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