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VTMO 2017 — Grade 3 — final Question 2

VTMO · VTMO 2017 — Grade 3 — final

Question 2

An, Binh and Chau’s combined age is $24$. In how many years will their combined age be $30$?
  1. $6$
  2. $3$
  3. $10$
  4. $4$
  5. $2$