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Algebra Difficulty 1.0 Junior Find the answer Canada

If $x=3$ , $y=2x$ and $z=3y$ , the value of $z$ is

Pick one

Solution

Since $x=3$ and $y=2x$ , then $y = 2\cdot 3 = 6$ .

Since $y=6$ and $z=3y$ , then $z = 3\cdot 6 = 18$ .

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.