Catch-Up Problems: Problem 1

Problem: X rides his bike at 13 kilometers per hour. Y can ride 15 kilometers in one hour. X gets a head start of two hours, and Y starts 6 kilometers before where X started. In how many hours can Y catch up to X?

Key: Pay attention to what is the definition of 'difference in track'

Please consider subscribing, here's our website: https://inquisitivekids.github.io