document.write( "Question 518800: If there is a bathtub with 3 faucets and the first faucet fills the tub up in fifteen mins. the second faucet fills the tub in thirty mins and the fourth fills it in forty five mins. if you turn all three faucets on at once how long will it take the tub to fill up? \n" ); document.write( "
Algebra.Com's Answer #345262 by mananth(16946)\"\" \"About 
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Filling the tub is 1 job
\n" ); document.write( "Faucet I 15 minutes
\n" ); document.write( "It does 1/15 job in 1 minute
\n" ); document.write( "Faucet II 30 minutes
\n" ); document.write( "It does 1/30 of thejob in 1 minute
\n" ); document.write( "Faucet III 45 minutes
\n" ); document.write( "It does 1/45 of the job in 1 minute
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\n" ); document.write( "Together they will do 1/15 + 1/30 + 1/45
\n" ); document.write( "Together they will do 11/90 of the job in one minute
\n" ); document.write( "they will take 90/11 minutes together
\n" ); document.write( "So they will take 8 1/6 minutes => 8.18 minutes \r
\n" ); document.write( "\n" ); document.write( "m.ananth@hotmail.ca
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