Ships On Water: Problem 1

Problem: Harbors A and B are 360 kilometers away from each other. A ship takes 35 hours to go from A to B. Traveling upstream took 5 more hours than traveling downstream. Another ship travels from Harbor A to Harbor B and back, traveling at a ship speed of 12 kilometers per hour. How long will it take for the second ship to travel from A to B and back?

Key: Make a E-chart

Fourth-grade Ships on Water: https://youtube.com/playlist?list=PLytgs3PKtgQ4aEH-rAEb4Gaz1nhpjpLfy

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