How long until you return to where you entered

label Algebra
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You are kayaking on a river.you just entered the river,which is currently running at a pace of 10mphYou can paddle 15mph(in either direction). If u paddle upstream for 1 hour and then stop paddling how long before u return to where uentered the river

Sep 10th, 2014

Your total speed upstream is 15-10=5 mph.

So within an hour you'll paddle 5 miles.

Your total speed downstream is 15+10= 25 mph

Time back is 

5 miles/ 25 mph = (1/5) h = 0.2 h = 12 min

Sep 11th, 2014

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Sep 10th, 2014
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Sep 10th, 2014
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