document.write( "Question 979179: A barge movers 12 miles downstream and 8 miles upstream in a total
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Algebra.Com's Answer #600579 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "A barge movers 12 miles downstream and 8 miles upstream in a total
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Let barge's speed, in still water, be S
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document.write( "Time taken to journey downstream, with current:  
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document.write( "Time taken to journey upstream, against current: 
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document.write( "Since total time taken was 2 hours, we get: 
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document.write( "12(S - 2) + 8(S + 2) = 2(S + 2)(S - 2) ----- Multiplying by LCD, (S + 2)(S - 2)
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document.write( "2S(S - 10) = 0
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document.write( "S - 10 = 0						OR					    2S = 0 (ignore)
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document.write( "S, or speed of barge, in still water =  mph \n" );
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