document.write( "Question 739502: 21. If carol can finish a job in 5 hours and Steve can finish the same job in 10 hours, how many minutes will it take both of them together to finish the job? \n" ); document.write( "

Algebra.Com's Answer #451145 by josmiceli(19441) $\"\"$ $\"About$

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Carol's rate:
\n" ); document.write( "( 1 job ) / ( 5 hrs )
\n" ); document.write( "Steve's rate:
\n" ); document.write( "( 1 job ) / ( 10 hrs )
\n" ); document.write( "----------------
\n" ); document.write( "Add their rates of working to get rate
\n" ); document.write( "working together
\n" ); document.write( " $\"+1%2F5+%2B+1%2F10+=+1%2Ft+\"$
\n" ); document.write( "Multiply both sides by $\"+10t+\"$
\n" ); document.write( " $\"+2t+%2B+t+=+10+\"$
\n" ); document.write( " $\"+3t+=+10+\"$
\n" ); document.write( " $\"+t+=+10%2F3+\"$ hrs
\n" ); document.write( "Convert to minutes
\n" ); document.write( " $\"+%28+10%2F3+%29%2A60+=+200+\"$
\n" ); document.write( "It will take them 200 min working together
\n" ); document.write( " \n" ); document.write( "

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