Two cars (Car A and Car B) travel on parallel east-west roads (Road 1 and Road 2) located 10km apart. Car A is travelling west on Road 1 at a speed of 80km/h. Car B is travelling east on Road 2 at a speed of 50km/h. How fast is the distance between them changing, when the distance between them is 15km? Hint. Draw a picture to get started.

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A: Construct the diagram: The triangles are similar, so  25t20t=x50-xx=2509

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A: Consider the given information

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A: Here I am attaching image so that you understand each and every step.

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A: Given:         To determine:

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