document.write( "Question 890108: Working alone, Sue can paint a 10' x 12' rectangular room in 12 hours. Joe can paint the same room in 16 hours. If they work together, how long will it take them to paint the room? \n" ); document.write( "
Algebra.Com's Answer #538695 by nerdybill(7384)\"\" \"About 
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Working alone, Sue can paint a 10' x 12' rectangular room in 12 hours. Joe can paint the same room in 16 hours. If they work together, how long will it take them to paint the room?
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\n" ); document.write( "Let x = time together
\n" ); document.write( "then
\n" ); document.write( "x(1/12 + 1/16) = 1
\n" ); document.write( "x(16 + 12) = 192
\n" ); document.write( "x(28) = 192
\n" ); document.write( "x = 6.857 hours
\n" ); document.write( "or
\n" ); document.write( "x = 6 hours and 51 minutes
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