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) You can put this solution on YOUR website! 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( ". \n" ); document.write( "Let x = hours it takes for both \n" ); document.write( "then \n" ); document.write( "x(1/4 + 1/6) = 1 \n" ); document.write( ". \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 \n" ); document.write( ". \n" ); document.write( "or \n" ); document.write( "2 hours and 24 minutes \n" ); document.write( " \n" ); document.write( " |