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6 February, 11:44

Peter went upstream in a canoe at an average speed of 12 miles per hour. He returned by the same route at an average speed of 18 miles per hour. What was Peter's average speed for the round trip, in miles per hour?

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Answers (2)
  1. 6 February, 11:48
    0
    15 because 12+18=30 and divided by 2 is 15.
  2. 6 February, 11:55
    0
    Miles per hour is 1
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