Meet Up and Catch-Up Problem Combination: Problem 1

Problem: Ashley and Beth start from the two points A and B and start towards each other, at the same time. Ashley can travel 30 kilometers per hour, while Beth can travel 20 kilometers per hour. After arriving at point A or B, they immediately change direction the other way. If the distance between their two meeting times was 20 kilometers, what is the length of A to B?

Meet Up Problems' Series: https://youtube.com/playlist?list=PLytgs3PKtgQ6R0tV0PLye8rbV7F9W8ykx

Key: Ratios

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