2025年6月国际A卷 · 第 20 题

2025年6月国际A卷 · 原库模块 1 · Q20 原库参考解析

A boat traveled a certain distance upriver and then traveled downriver 10 miles farther than it traveled upriver. The boat took \( x \) hours to travel upriver at a speed of 12 miles per hour. The boat then took \( y \) hours to travel downriver at a speed of 18 miles per hour faster than the speed at which the boat traveled upriver. Which of the following equations best represents this situation?

2025年6月国际A卷 · 第 20 题

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