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Solid Geometry: Rectangular Box

Rectangular box $$B$$ has a width of 2, a length of 3, and a height of 5. If the width of rectangular box $$C$$ is 3 times the width of $$B$$, the length of $$C$$ is 5 times the length of $$B$$, and the height of $$C$$ is 2 times the height of $$B$$, then the volume of $$C$$ is how many times the volume of $$B$$?
Correct. [[snippet]] Thus, the volume of $$C$$ is $$\frac{900}{30} = 30$$ times the volume of $$B$$.
Incorrect. [[snippet]]
900
300
90
30
10