document.write( "Question 968541: Suppose that it takes 9 hours for four workers to roof a house. If the time required to do the job
\n" ); document.write( "varies inversely as the number of people working on it, how long does it take for five workers to finish a
\n" ); document.write( "roof of the same size? \n" ); document.write( "

Algebra.Com's Answer #591891 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Suppose that it takes 9 hours for four workers to roof a house.
\n" ); document.write( " If the time required to do the job varies inversely as the number of people working on it, how long does it take for five workers to finish a
\n" ); document.write( "roof of the same size?
\n" ); document.write( ":
\n" ); document.write( "let t = time required by 5 men to do the job
\n" ); document.write( "An inverse relationship
\n" ); document.write( " $\"t%2F9\"$ = $\"4%2F5\"$
\n" ); document.write( "Cross multiply
\n" ); document.write( "5t = 36
\n" ); document.write( "t = 36/5
\n" ); document.write( "t = 7.2 hrs fro 5 men to do the job \n" ); document.write( "

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