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VTMO 2019 — Grade 4 — semifinal Question 4

VTMO · VTMO 2019 — Grade 4 — semifinal

Question 4

A container full of water weighs $13 \,\mathrm{kg}$; with half the water it weighs $7 \,\mathrm{kg}$. What is the empty weight in kg?
  1. $1$
  2. $2$
  3. $5$
  4. $6$
  5. $3$