Mathematics, 25.05.2020 03:57 CalCDanG

John should drive to his workplace and back to home. On the way to the workplace it was raining, so he drove at 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?

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John should drive to his workplace and back to home. On the way to the workplace it was raining, so...