Circulating Tracks: Problem 4

Problem: As shown, A and B are two points on either end of the pathway's diameter. Willa is at A, and William is at B. They start at the same time, going opposite directions. They first meet at point C, 80 meters from point A. They then meet a second time at point D, 60 meters from point B. Find the circumference of this pathway.

Meet-up Problems: https://youtube.com/playlist?list=PLytgs3PKtgQ6R0tV0PLye8rbV7F9W8ykx

Key: Draw a sketch, use proportionality

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