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A frame is built around a 12 inch by 16 inch rectangular picture. The frame has a width of x. The new area including the frame is 285 square inches. What is the numerical value for the width of the frame?

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Answer: A simple way to solve a problem like this is by trial and error. you know it will add the same amount to width and height and therefore you can find that the width of the frame is 3 inches.

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