document.write( "Question 308392: It takes Sue 3 hours to paint a room and it takes Joe 5 hours to paint the same room. If they work together how long will it take them to paint the room?\r
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Algebra.Com's Answer #220545 by checkley77(12844)\"\" \"About 
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1/3+1/5=1/x
\n" ); document.write( "(5+3)/3*5=1/x
\n" ); document.write( "8/15=1/x cross multiply.
\n" ); document.write( "8x=15
\n" ); document.write( "x=15/8
\n" ); document.write( "x=1.875 hours working together.
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