document.write( "Question 1089560: A father and his son can clean the house together in 8 hours. When the son works alone, it takes him an hour longer to clean than it takes his dad alone. Find how long it takes the son to clean alone. \n" ); document.write( "

Algebra.Com's Answer #703894 by josgarithmetic(39617) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "FATHER                 \r\n" );
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document.write( "SON                    \r\n" );
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document.write( "FATHER AND SON          \r\n" );
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\r
\n" ); document.write( "\n" ); document.write( "-
\n" ); document.write( " $\"1%2Ft%2B1%2F%28t%2B1%29=1%2F8\"$ \r
\n" ); document.write( "\n" ); document.write( "-\r
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\n" ); document.write( "\n" ); document.write( "ALTERNATIVE:
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document.write( "FATHER                 \r\n" );
document.write( "SON                    \r\n" );
document.write( "FATHER AND SON          \r\n" );
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\n" ); document.write( " $\"1%2F%28x-1%29%2B1%2Fx=1%2F8\"$
\n" ); document.write( "-\r
\n" ); document.write( "\n" ); document.write( " $\"8x%2B8%28x-1%29=x%28x-1%29\"$
\n" ); document.write( " $\"8x%2B8x-8=x%5E2-x\"$
\n" ); document.write( " $\"16x-8=x%5E2-x\"$
\n" ); document.write( " $\"x%5E2-17x%2B8=0\"$
\n" ); document.write( "-
\n" ); document.write( " $\"x=%2817%2Bsqrt%2817%5E2-4%2A8%29%29%2F2\"$
\n" ); document.write( " $\"x=%2817%2Bsqrt%28257%29%29%2F2\"$
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\n" ); document.write( " $\"highlight%28x=16.516%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "-
\n" ); document.write( " $\"1%2F%2816.5-1%29%2B1%2F16.5=0.0645%2B0.60606=0.125\"$ ,

close enough to

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