document.write( "Question 1124934: A new machine makes 20,000 aluminum cans three times faster than an older machine. With both machines operating, it takes 6 h to make 20,000 cans. How long would it take the new machine, working alone, to make 20,000 cans? \n" ); document.write( "

Algebra.Com's Answer #741221 by josgarithmetic(39629) $\"\"$ $\"About$

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One job is \"make 20000 aluminum cans\".\r
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\n" ); document.write( "\n" ); document.write( "Rate for old machine, r
\n" ); document.write( "Rate for new machine, 3r\r
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\n" ); document.write( "\n" ); document.write( "Both machines together take 6 hours to do 1 job.
\n" ); document.write( " $\"4r%2A6=1\"$
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\n" ); document.write( "Question is asking for reciprocal of $\"3r\"$ .
\n" ); document.write( " $\"4%2A2%2A3r=1\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3r=1%2F8\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"1%2F%283r%29=highlight%288%29\"$ ---------------eight hours for new machine to do 1 job working alone. \n" ); document.write( "

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