document.write( "Question 465706: Tom can paint a room in 5 hours; if he works with Tim, they can paint together the same room in 2 hours. How long does it take for Tim to paint the room by himself?\r
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document.write( "I came up with 1/5 – 1/2 = x
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document.write( " I think X would be 3, that Tim could paint the room in 3 hours. But I am not sure. Please help any advice would be great, tahnk you! \n" );
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Algebra.Com's Answer #319162 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Tom can paint a room in 5 hours; if he works with Tim, they can paint together the same room in 2 hours. \n" ); document.write( " How long does it take for Tim to paint the room by himself? \n" ); document.write( ": \n" ); document.write( "Here is a simple and understandable method of doing these shared work problems \n" ); document.write( ": \n" ); document.write( "Let t = Tim's time working alone \n" ); document.write( "Let the completed job = 1 \n" ); document.write( ": \n" ); document.write( "Each man will do a fraction of the job; the two fractions must add up to 1 (a complete job) \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "Multiply by 5t to clear the denominators, results \n" ); document.write( "2t + 5(2) = 5t \n" ); document.write( "2t + 10 = 5t \n" ); document.write( "10 = 5t - 2t \n" ); document.write( "10 = 3t \n" ); document.write( "t = \n" ); document.write( "t = 3 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "See if these two fractions add up to 1 \n" ); document.write( "2/5 + 2/3.33 \n" ); document.write( ".4 + .6 = 1 \n" ); document.write( " \n" ); document.write( " |