document.write( "Question 1112619: Working together Ben and Frank wash 1,000 dishes in 3 hours. Ben works twice as fast as Frank. How lon does it take Frank to wash dishes alone? \n" ); document.write( "

Algebra.Com's Answer #727666 by ikleyn(52786) $\"\"$ $\"About$

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\n" ); document.write( "Working together Ben and Frank $\"highlight%28cross%28was%29%29\"$ wash 1,000 dishes in 3 hours. Ben works twice as fast as Frank.
\n" ); document.write( "How long does it take Frank to wash dishes alone?
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\n" ); document.write( "\n" ); document.write( "Ben alone works as two Francs.\r
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\n" ); document.write( "\n" ); document.write( "So, you can re-formulate the problem in this way:\r
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document.write( "     Three Francs make a job in 3 hours.\r\n" );
document.write( "     How long does it take Frank to make this job alone ?\r\n" );
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\n" ); document.write( "\n" ); document.write( "As soon as you re-formulated it, the answer is obvious: It will take 9 hours.\r
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