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March 27, 2015

March 27, 2015

Posted by **jessica** on Wednesday, May 29, 2013 at 10:05am.

a motorboat went upstream at 15 miles per hour and returned downstream at 20 miles per hour. How far did the boat travel one way if the round trip took 3.5 hours?

- algebra -
**Steve**, Wednesday, May 29, 2013 at 10:16amsince time = distance/speed, add up the total time:

d/15 + d/20 = 3.5

d = 30

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