document.write( "Question 541991: Joe took 4 hours to fill the pool and Jim took 6 hours to fill the pool. If they filled the pool at the same time how long would it take them? \n" ); document.write( "

Algebra.Com's Answer #354382 by josmiceli(19441) $\"\"$ $\"About$

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Add their rate of filling
\n" ); document.write( "Joe's rate: ( 1 pool ) / ( 4 hrs )
\n" ); document.write( "Jim's rate: { 1 pool ) / ( 6 hrs )
\n" ); document.write( "----------------------
\n" ); document.write( "Let $\"t\"$ = time in hours to fill pool with both filling
\n" ); document.write( " $\"+1%2F4+%2B+1%2F6+=+1%2Ft+\"$
\n" ); document.write( "Multiply both sides by $\"+12t+\"$
\n" ); document.write( " $\"+3t+%2B+2t+=+12+\"$
\n" ); document.write( " $\"+5t+=+12+\"$
\n" ); document.write( " $\"+t+=+2.4+\"$
\n" ); document.write( " $\"+.4%2A60+=+24+\"$
\n" ); document.write( "Together they fill pool in 2 hrs and 24 min \n" ); document.write( "

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