document.write( "Question 454804: Andrew can paint a room by himself in 8 hours. With the help of Mike, it will only take him 3 hours. How long does it take Mike by him self?
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Algebra.Com's Answer #312249 by nerdybill(7384)\"\" \"About 
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Andrew can paint a room by himself in 8 hours. With the help of Mike, it will only take him 3 hours. How long does it take Mike by him self?
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\n" ); document.write( "Let x = time (hours) it takes for Mike by himself
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\n" ); document.write( "3(1/8 + 1/x) = 1
\n" ); document.write( "multiplying both sides by 8x:
\n" ); document.write( "3(x + 8) = 8x
\n" ); document.write( "3x + 24 = 8x
\n" ); document.write( "24 = 5x
\n" ); document.write( "24/5 = x
\n" ); document.write( "4.8 hours = x
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