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HKIMO 2026 Grade 9 National Preliminary Set 04 Question 2

HKIMO · HKIMO 2026 Grade 9 National Preliminary Set 04

Question 2

Given $A: B=2:3$, $A: C=5:7$ and $A-B+C=288$, find $A$.
  1. 270
  2. 480
  3. 320
  4. 540