document.write( "Question 571229: if it takes 4 hours for a group of people to paint a house and 6 hours for another group of people to paint another house, How long will it take for both groups of people to paint a house together? \n" ); document.write( "
Algebra.Com's Answer #368019 by nerdybill(7384)\"\" \"About 
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if it takes 4 hours for a group of people to paint a house and 6 hours for another group of people to paint another house, How long will it take for both groups of people to paint a house together?
\n" ); document.write( "Let x = time (hours) it takes for both groups
\n" ); document.write( "then
\n" ); document.write( "x(1/4 + 1/6) = 1
\n" ); document.write( "multiply both sides by 12:
\n" ); document.write( "x(3 + 2) = 12
\n" ); document.write( "x(5) = 12
\n" ); document.write( "x = 12/5
\n" ); document.write( "x = 2.4 hours
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