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On a journey across Kolkata, a taxi aver...

On a journey across Kolkata, a taxi average 50km per hour for 50% of the distance, 40km per hour for 40% of it and 20km per hour for the remaining. The average speed (in km/hour) for the whole journey is

A

42

B

40

C

35

D

45

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Verified by Experts

The correct Answer is:
B
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