If $s$ represents the volume, in $\text{cm}^{3}$, of sand and $c$ rep…

|Question 20Math

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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 (

cm^{3}

) of sand and cement, where the ratio of the volume of sand to the volume of cement is 7 to 3.

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?

s = c

7 s + 3 c = 4, 880

s = c

3 s + 7 c = 4, 880

7 s = 3 c

s + c = 4, 880

3 s = 7 c

s + c = 4, 880