document.write( "Question 539747: jim can fill a pool carrying buckets of water in 30 minutes.sue can do the same job in 45 minutes .tony can do the same job in 1 hours y 30 min.How quickly can all three fill the pool together \n" ); document.write( "

Algebra.Com's Answer #353541 by josmiceli(19441) $\"\"$ $\"About$

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Add their rates of working
\n" ); document.write( "Let $\"t\"$ = their time working together
\n" ); document.write( "Jim's rate: ( 1 job ) / ( 30 min )
\n" ); document.write( "Sue's rate: (1 job ) / ( 45 min )
\n" ); document.write( "Tony's rate: ( 1 job ) / (90 min )
\n" ); document.write( " $\"+1%2F30+%2B+1%2F45+%2B+1%2F90+=+1%2Ft+\"$
\n" ); document.write( "Multiply both sides by $\"+90t+\"$
\n" ); document.write( " $\"+3t+%2B+2t+%2B+t+=+90+\"$
\n" ); document.write( " $\"+6t+=+90+\"$
\n" ); document.write( " $\"+t+=+15+\"$
\n" ); document.write( "Working together, it will take them 15 min \n" ); document.write( "

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