document.write( "Question 109329: ron takes two hours more than paul to mow the lawn . working togather they can mow the lawn in 5 hrs . how long does it take each of them working alone
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Algebra.Com's Answer #79739 by ankor@dixie-net.com(22740)\"\" \"About 
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ron takes two hours more than paul to mow the lawn . working together they can mow the lawn in 5 hrs . how long does it take each of them working alone>
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\n" ); document.write( "x = number of hrs required by Paul working alone:
\n" ); document.write( "Then
\n" ); document.write( "(x+2) = number of hrs required by Ron working alone
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\n" ); document.write( "Let the completed job = 1
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\n" ); document.write( "A simple equation:
\n" ); document.write( "\"5%2Fx\" + \"5%2F%28%28x%2B2%29%29\" = 1
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\n" ); document.write( "Multiply equation by x(x+2) to get rid of the denominators:
\n" ); document.write( "x(x+2)*\"5%2Fx\" + x(x+2)*\"5%2F%28%28x%2B2%29%29\" = x(x+2)*1
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\n" ); document.write( "Cancel out the denominators:
\n" ); document.write( "5(x+2) + 5x = x(x+2)
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\n" ); document.write( "5x + 10 + 5x = x^2 + 2x
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\n" ); document.write( "combine like terms, arrange as a quadratic equation on the left:
\n" ); document.write( "x^2 + 2x- 5x - 5x - 10 = 0
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\n" ); document.write( "x^2 - 8x - 10 = 0
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\n" ); document.write( "This won't readily factor, solve using the quadratic formula:
\n" ); document.write( "a = 1; b = -8; c = -10
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\n" ); document.write( "I assume you know how to do that;
\n" ); document.write( "You should get:
\n" ); document.write( "x = 9.1 hrs (Paul's time)
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