ONE QUESTION, ONE STEP
ZX-129ABC61142024年8月A卷 · 第 21 题
2024年8月A卷 · 原库模块 2 · Q21 原库参考解析
A scientist makes batches of bricks using different sand-to-cement ratios to test how the sand-to-cement ratio affects the strength of the brick. For one batch of bricks, the scientist uses 4,890 cubic centimeters (\( cm^3 \) ) of sand and cement, where the ratio of the volume of sand to the volume of cement is 4 to 1. If s represents the volume, in \( cm \)\( ^{3} \), of sand and c represents the volume, in \( cm \)\( ^{3} \), of cement that the scientist uses for this batch of bricks, which system of equations represents this situation?
参考答案：
解题思路
容易忽略的一步
