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John should drive to his workplace and back to home. On the way to the workplace it was raining, so he drove at a speed of 42mph. On the way back the rain was over so his speed was 54mph. What was John's average speed, for the whole trip?

Answer :

The answer is 48 mph. You take the two numbers and add them. Then divide by two since there are two numbers. Then you should get the overall average.

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