6th Grade Itinerary Problems Using Formulas: Problem 4

Problem: A and B are running on a circular track. They each start at the two opposite ends of the diameter of the track, and start running in the opposite direction. After B has ran 100 meters, the two of them meet. After they resume running, they meet at a place where A has 60 meters left to run in order to get to the point where he began. Find the circumference of these entire track.

Key: Use ratios to record distance traveled by A, B, and their total both times meeting

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