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2023年12月C卷 · 第 7 题

2023年12月C卷 · 原库模块 2 · Q7 原库参考解析

Lao walks at a speed of 2 miles per hour and runs at a speed of 5 miles per hour. He walks for w hours and runs for r hours for a combined total of 11 miles. Which equation represents this situation?
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