document.write( "Question 612656: Pat paints a house in 4 hrs.
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document.write( "Mary paints a house in 6 hrs.
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document.write( "How many hours does it take to paint house if the both oaint it together? \n" );
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Algebra.Com's Answer #385638 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! Pat paints a house in 4 hrs. \n" ); document.write( "Mary paints a house in 6 hrs. \n" ); document.write( "How many hours does it take to paint house if the both oaint it together? \n" ); document.write( ". \n" ); document.write( "Let x = time (hours) it takes for both \n" ); document.write( "then \n" ); document.write( "x(1/4 + 1/6) = 1 \n" ); document.write( "multiplying 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 \n" ); document.write( "or \n" ); document.write( "x = 2 hours and 24 minutes \n" ); document.write( " \n" ); document.write( " |