document.write( "Question 1205975: Josh can clean the math building on his campus in 3 hours. Ken takes 7 hours to clean the same building. If they work together, how long will it take them to clean this building?\r
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Algebra.Com's Answer #843105 by josgarithmetic(39618) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "              WORK RATE        TIME          JOBS\r\n" );
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document.write( "JOSH            1/3              3             1\r\n" );
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document.write( "KEN             1/7              7             1\r\n" );
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document.write( "COMBINED    ----the two of them working together\r\n" );
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\n" ); document.write( " $\"1%2F3%2B1%2F7\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%287%2B3%29%2F21\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"10%2F21\"$ \r
\n" ); document.write( "\n" ); document.write( "Or 21 hours to do 10 jobs; \r
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\n" ); document.write( "\n" ); document.write( "About 2 hours 6 minutes to do 1 job \n" ); document.write( "

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