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A truck travels at a speed of 60 km/h from city P to city Q and returns to city P by the same route at a speed of 100 km/h. What is the average speed of the truck for the given journey?

A85 km/h

B80 km/h

C75 km/h

D70 km/h

Answer:

C. 75 km/h

Read Explanation:

75 km/h


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