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A man complete a certain journey by car....

A man complete a certain journey by car. If he travels 30% of distance and 60% of distance at 20 km/hr and 40 km/hr respectively and remaining distance at 10 km/hr, find average speed to cover total distance ?

A

25km/hr

B

28km/hr

C

30km/hr

D

33km/hr

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The correct Answer is:
A
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