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Algebra Difficulty 1.0 Junior Find the answer Canada

Point $Q$ is on a line segment between $P$ and $R$ , as shown.

If $PR=12$ and $PQ=3$ , what is the length of $QR$ ?

Pick one

Solution

Since $Q$ is between $P$ and $R$ , then $PQ + QR = PR$ .

Since $PR = 12$ and $PQ=3$ , then $QR = PR - PQ = 12 - 3 = 9$ .

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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.