document.write( "Question 281855: IF a cold-water faucet is left on, the sink will fill in 10 mins. If the hot-water faucet is left on, the sink will fill in 12 mins. How long would it take the sink to fill if both faucets are left on? \n" ); document.write( "
Algebra.Com's Answer #204722 by mananth(16946)\"\" \"About 
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filling the facet is 1 job\r
\n" ); document.write( "\n" ); document.write( "Cold facuet fills in 10 minutes\r
\n" ); document.write( "\n" ); document.write( "So it does 1/10 of the job in 1 minute\r
\n" ); document.write( "\n" ); document.write( "Hot facuet fills in 12 minutes\r
\n" ); document.write( "\n" ); document.write( "so it does 1/12 of the job in 1 minute\r
\n" ); document.write( "\n" ); document.write( "1/10 +1/12 of the job they do together in 1 minute = 22/120 \r
\n" ); document.write( "\n" ); document.write( "22/120 job in 1 minute\r
\n" ); document.write( "\n" ); document.write( "1 job they will do in 120/22 minutes\r
\n" ); document.write( "\n" ); document.write( "= 5.45 minutes
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