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Australian AMC 2022 - Senior Question 1

AMC AUSTRALIA · Australian AMC 2022 - Senior

Question 1

The temperature in the mountains was $4^\circ\mathrm C$ but dropped overnight by $7^\circ\mathrm C$. What was the temperature in the morning?
  1. $3^\circ\mathrm C$
  2. $11^\circ\mathrm C$
  3. $-3^\circ\mathrm C$
  4. $-4^\circ\mathrm C$
  5. $-11^\circ\mathrm C$