document.write( "Question 970929: Mark lays a slab of concrete in 6 hours. tony lays the same size slab in 2 hours. if both work on the job together and the cost of labor is $42 per hour, decide what the labor estimate should be \n" ); document.write( "

Algebra.Com's Answer #593573 by josgarithmetic(39630) $\"\"$ $\"About$

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(1/6+1/2)(JOBS/HOUR)(1/43)(HOUR/DOLLARS)=howmany(JOBS/DOLLARS)\r
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\n" ); document.write( "\n" ); document.write( " $\"%282%2F3%29%281%2F42%29%28jobs%2Fdollar%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"1%2F%283%2A21%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"1%2F63\"$
\n" ); document.write( " $\"63%2Adollars\"$ , to do the one job.
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