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HKIMO 2026 Grade 9 National Preliminary Set 02 Question 5

HKIMO · HKIMO 2026 Grade 9 National Preliminary Set 02

Question 5

Given $A:B=5:6$, $B:C=6:7$ and $A+B+C=54$, find $A$.
  1. 18
  2. 16
  3. 15
  4. 21