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January 25, 2015

January 25, 2015

Posted by **Anonymous** on Friday, December 7, 2012 at 1:46pm.

- math -
**Steve**, Friday, December 7, 2012 at 2:26pmsince distance = time*speed, if the boat=b and the river=r mph,

2.6(b+r) = 21

3.9(b-r) = 21

b = 175/26 = 6.73 mph

r = 25/36 = 1.53 mph

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