document.write( "Question 1144431: A roofer and an assistant can repair a roof together in 3 hours. Working alone, the assistant can complete the repair in 17 hours. If both the roofer and the assistant work together for 2 hours and then the assistant is left alone to finish the job, how much longer should the assistant need to finish the repairs? (Round your answer to one decimal place.) \n" ); document.write( "
Algebra.Com's Answer #765556 by josgarithmetic(39625)\"\" \"About 
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document.write( "PERSON                   RATE  roofs per hours\r\n" );
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document.write( "Roofer                      1/x\r\n" );
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document.write( "Assistant                   1/17\r\n" );
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document.write( "Roofer PLUS Assistant       1/3\r\n" );
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\n" ); document.write( "\n" ); document.write( "\"1%2Fx%2B1%2F17=1%2F3\"\r
\n" ); document.write( "\n" ); document.write( "\"51x%281%2Fx%2B1%2F17%29=%2851x%29%281%2F3%29\"\r
\n" ); document.write( "\n" ); document.write( "\"51%2B3x=17x\"\r
\n" ); document.write( "\n" ); document.write( "\"51=14x\"\r
\n" ); document.write( "\n" ); document.write( "\"x=51%2F14\"------------Roofer's rate is \"14%2F51\".
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\n" ); document.write( "roofer and the assistant work together for 2 hours and then the assistant is left alone to finish the job, how much longer should the assistant need to finish the repairs?
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\n" ); document.write( "\n" ); document.write( "unknown time t,
\n" ); document.write( "\"%281%2F3%292%2B%281%2F17%29t=1\"
\n" ); document.write( "Solve this for t.
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