document.write( "Question 258985: HElP! I cant figure this out. what equation do i use?\r
\n" ); document.write( "\n" ); document.write( "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 ½ hours. How quickly can all three fill the pool together? \n" ); document.write( "
Algebra.Com's Answer #190719 by ankor@dixie-net.com(22740)\"\" \"About 
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Jim can fill a pool carrying buckets of water in 30 minutes.
\n" ); document.write( " Sue can do the same job in 45 minutes.
\n" ); document.write( " Tony can do the same job in 1 ½ hours.
\n" ); document.write( " How quickly can all three fill the pool together?
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\n" ); document.write( "Let t = time required all working together
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\n" ); document.write( "Change 1.5 hrs to 90 min
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\n" ); document.write( "Let the completed job = 1 (full pool)
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\n" ); document.write( "Each will do a fraction of the job, the three fractions add up to 1
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\n" ); document.write( "\"t%2F30\" + \"t%2F45\" + \"t%2F90\" = 1
\n" ); document.write( "Multiply equation by 90 to get rid of the denominators. results:
\n" ); document.write( "3t + 2t + t = 90
\n" ); document.write( "6t = 90
\n" ); document.write( "t = \"90%2F6\"
\n" ); document.write( "t = 15 min all working together
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\n" ); document.write( "Check solution on a calc
\n" ); document.write( "15/30 + 15/45 + 15/90
\n" ); document.write( ".5 + .333 + .167 = 1
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