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AIMO 2021 Secondary 3 — Preliminary (Open Trial 1) Question 7

AIMO · AIMO 2021 Secondary 3 — Preliminary (Open Trial 1)

Question 7

The length and width of a rectangle are each increased by 50%. How many times its original area is the new area?

Original printed choices: A: 2.5; B: 5; C: 1.25; D: 12.5.

Editorial format: answer directly; the printed choices are retained for source fidelity. See the solution for the source issue.