document.write( "Question 997068: Jerry can lay a tile floor in 3 hours less time than Jake. If they can work together, the floor takes 2 hours. How long would it take Jerry to lay the floor by himself? \n" ); document.write( "
Algebra.Com's Answer #615324 by MathTherapy(10552)\"\" \"About 
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Jerry can lay a tile floor in 3 hours less time than Jake. If they can work together, the floor takes 2 hours. How long would it take Jerry to lay the floor by himself?
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Let time Jerry takes be J
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document.write( "Then Jerry can do \"1%2FJ\" of the floor in 1 hour
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document.write( "Also, time Jake takes = J + 3
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document.write( "Jake can do \"1%2F%28J+%2B+3%29\" of floor in 1 hour
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document.write( "With them working together, we get: \"1%2FJ+%2B+1%2F%28J+%2B+3%29+=+1%2F2\"
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document.write( "2(J + 3) + 2J = J(J + 3) ------ Multiplying by LCD, 2J(J + 3) 
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document.write( "\"2J+%2B+6+%2B+2J+=+J%5E2+%2B+3J\"
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document.write( "\"4J+%2B+6+=+J%5E2+%2B+3J\"
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document.write( "\"J%5E2+%2B+3J+-+4J+-+6+=+0\"
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document.write( "\"J%5E2+-+J+-+6+=+0\"
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document.write( "(J - 3)(J + 2) = 0
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document.write( "J, or time it takes Jerry, alone = \"highlight_green%283%29\" hours       OR     J = - 2(ignore) \n" );
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