ONE QUESTION, ONE STEP
ZX-58034C2ED22024年8月北美D卷(易) · 第 21 题
2024年8月北美D卷(易) · 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 4,880 cubic centimeters (cm³) of sand and cement, where the ratio of the volume of sand to the volume of cement is 7 to 3. If s represents the volume, in cm³, of sand and c represents the volume, in cm³, 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
