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A man travels from P to Q at the speed o...

A man travels from P to Q at the speed of 60 km/h and travels from Q to P at the speed of 90 km/h. What is the average speed of the man for the whole journey?

A

75 km/h

B

78 km/h

C

70 km/h

D

72 km/h

Text Solution

Verified by Experts

The correct Answer is:
D
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