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5 January, 08:15

Alex is making a rectangular garden and wants a fence around it. He wants the length of the garden to be 3 feet longer than the width. 150 feet of fence is all he can afford. What is the greatest possible width he can have for his garden?

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  1. 5 January, 12:11
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    Since it's rectangular, there is a length and width. Let the width be w, and the length is then w+3. The total length of the fence is the perimeter, so 150 = 2*w + 2 * (w+3) = 4w+6. Solving for w, this becomes w = (150-6) / 4 = 144/4 = 36 feet.
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