document.write( "Question 888780: John and Bill carpet a room in 12 hours. John can carpet the same room in 7 hours less than Bill. How long would it take Bill to carpet the room alone? \n" ); document.write( "

Algebra.Com's Answer #537702 by richwmiller(17219) $\"\"$ $\"About$

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1/j+1/b=1/12,
\n" ); document.write( "j=b-7
\n" ); document.write( "b=28 j=21
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