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VTMO 2013 — Grade 7 — semifinal Question 8

VTMO · VTMO 2013 — Grade 7 — semifinal

Question 8

A group’s average age is $15$. In three years the total age will be $198$. How many people are there?
  1. $9$
  2. $10$
  3. $11$
  4. $12$
  5. $13$