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christinaxxx
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okay, so the current in a river is 2 miles per hour. A small boat can travel 32 miles upstream and then 24 miles downstream in a total time of 6 hours. find the speed of the boat in still water.
 one year ago
 one year ago
christinaxxx Group Title
okay, so the current in a river is 2 miles per hour. A small boat can travel 32 miles upstream and then 24 miles downstream in a total time of 6 hours. find the speed of the boat in still water.
 one year ago
 one year ago

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rahul91 Group TitleBest ResponseYou've already chosen the best response.0
upstream velocity = velocity of boat(unknown)velocity of stream down stream = velocity of boat + velocity of stream time = distance/ speed form quadratic eqn and solve
 one year ago

robtobey Group TitleBest ResponseYou've already chosen the best response.1
time = distance/rate Solve the following for r, the rate (speed in still water)\[\frac{32}{r2}+\frac{32}{r+2}= 6\]
 one year ago

robtobey Group TitleBest ResponseYou've already chosen the best response.1
\[r = \frac{2}{3} \left(8+\sqrt{73}\right) =11.03 \text { mph} \]
 one year ago

robtobey Group TitleBest ResponseYou've already chosen the best response.1
Thank you for the medal. By the way, it was a surprise that, if this was a school problem, x had a radical in it's expression.
 one year ago
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