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Two rectangles have the same width. One is 12 units long and the other is 8 units long. The area of the first rectangle is 320 square units more than the area of the second rectangle. Find the width of each rectangle.

3 answers

Let the width be w
area of first = 12w
area of 2nd = 8w

12w - 8w = 320

carry on

answer:80 units

Right, the answer is 80 units

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