SOLUTION: Paddling 7 miles upstream, Sara and her brother averaged 2 miles per hour. On the way back, their rate of speed was 3.5 miles per hour. How long did it take them to make the round

SOLUTION: Paddling 7 miles upstream, Sara and her brother averaged 2 miles per hour. On the way back, their rate of speed was 3.5 miles per hour. How long did it take them to make the round

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Question 994168: Paddling 7 miles upstream, Sara and her brother averaged 2 miles per hour. On the way back, their rate of speed was 3.5 miles per hour. How long did it take them to make the round trip?
Answer by josgarithmetic(39625) (Show Source): You can put this solution on YOUR website!

               speed    time    distance
UPSTREAM         2       u       7
DOWNSTREAM       3.5     b       7
Total                   u+b

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