Bluebook试题6 · 第 4 题

Bluebook试题6 · 原库模块 1 · Q4 原库参考解析

The equation x+y= 1,440 represents the number of minutes of daylight (between sunrise and sunset), x, and the number of minutes of non-daylight, y, on a particular day in Oak Park, Illinois. If this day has 670 minutes of daylight, how many minutes of non-daylight does it have?

Bluebook试题6 · 第 4 题

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