SOLUTION: Please help me solve this question. A motorist travelled 20km of an average speed of 15km/h. If he made the return journey at an average speed of 30km/h,find the average speed o
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Question 1118275
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Please help me solve this question.
A motorist travelled 20km of an average speed of 15km/h. If he made the return journey at an average speed of 30km/h,find the average speed of the whole journey.
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Answer by
josgarithmetic(39625)
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SPEED TIME DISTANCE GOING 15 20/15 20 RETURN 30 20/30 20 TOTAL t d=40
Whole-trip average speed is
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