document.write( "Question 1095127: A father can do a job in 3 days,and his son can do the same job for 5 days.How long will it take them to finish the job if they work together? \n" ); document.write( "

Algebra.Com's Answer #709691 by josgarithmetic(39625) $\"\"$ $\"About$

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$\"1%2F3%2B1%2F5\"$ , unit of job per days\r
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\n" ); document.write( "\n" ); document.write( " $\"5%2F15%2B3%2F15\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"8%2F15\"$ \r
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\n" ); document.write( "\n" ); document.write( "-\r
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\n" ); document.write( "\n" ); document.write( " $\"15%2F8=highlight_green%281%267%2F8%29\"$ days for 1 job \n" ); document.write( "

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