During a journey of 80 km a train covers...

During a journey of 80 km a train covers first 60km with a speed of 40 km/h and completes the remaining distance with a speed of 20 km/h. What is the average speed of the train during the whole journey?

A

30 km/h

B

32 km/h

C

36 km/h

D

40 km/h

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Verified by Experts

The correct Answer is:

B

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