document.write( "Question 262898: If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? \n" ); document.write( "
Algebra.Com's Answer #193660 by nerdybill(7384)\"\" \"About 
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If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?
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\n" ); document.write( "Let x = hours it takes for both
\n" ); document.write( "then
\n" ); document.write( "x(1/4 + 1/6) = 1
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\n" ); document.write( "Multiplying both sides by 24 we get:
\n" ); document.write( "x(6 + 4) = 24
\n" ); document.write( "x(10) = 24
\n" ); document.write( "x = 2.4 hours
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\n" ); document.write( "or
\n" ); document.write( "2 hours and 24 minutes
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