document.write( "Question 843111: The current in a river is 4 kph. Al can row from home to his fishing spot 5 km down river and back home again in 3 hours. What is Al's rowing rate in still water? \n" ); document.write( "

Algebra.Com's Answer #507931 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "What is Al's rowing rate in still water?
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document.write( "t = D/r
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document.write( "*** |Multiplying thru by (x+40(x-4) so as all denominators = 1
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document.write( "  5(x-4) + 5(x+4) = 3(x+4)(x-4)
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document.write( "      10x = 3x^2 - 48
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document.write( "     3x^2 - 10x - 48 = 0
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document.write( "   x = 6,   (tossing out negative solution for unit measure)
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document.write( "  6kph is Al's rowing rate in still water
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document.write( "CHECKING our answer***
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document.write( " 5/10 + 5/2  = 5/10 + 25/10 = 30/10 = 3hr
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document.write( "Wish You the Best in your Studies.
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