5. The length of a rectangle is decreasing at 2 cm/sec, while the width is increasing at 5 cm/sec. At the moment when the length is 15 cm and the width is 20 cm, at what rate is the area of the rectangle changing?

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5. The length of a rectangle is decreasing at 2 cm/sec, while the width is increasing at 5 cm/sec. At the moment when the length is 15 cm and the width is 20 cm, at what rate is the area of the rectangle changing?

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