document.write( "Question 402220: if one guy can paint a house in 5 hours, and another guy can do it in 3, how long will it take them together if the 5 hour guy starts an hour earlier then the 3 hour guy?
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Algebra.Com's Answer #284543 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! Thanks for correcting me!\r \n" ); document.write( "\n" ); document.write( "if one guy can paint a house in 5 hours, and another guy can do it in 3, how long will it take them together if the 5 hour guy starts an hour earlier then the 3 hour guy? \n" ); document.write( ". \n" ); document.write( "Let x = time (hours) it takes for both \n" ); document.write( "then \n" ); document.write( "(x+1)(1/5) + x(1/3) = 1 \n" ); document.write( "multiplying both sides by 15: \n" ); document.write( "(x+1)(3) + x(5) = 15 \n" ); document.write( "3x+3 + 5x = 15 \n" ); document.write( "8x+3 = 15 \n" ); document.write( "8x = 12 \n" ); document.write( "x = 1.5 hours\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |