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What is the correct answer?


A motorist travel to a place 150 km away at an avearge speed of 50 km/hr and returns ar 30 km/hr.His average speed for the whole jouney in km/hr is

A. 36.5 km/hr

B. 37.5 km/hr

C. 35.5 km/hr

D. 34.5 km/hr

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