If the temperature is 30°C and drops by 10°C, what is the new temperature?

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• A 40°C
• B 20°C
• C 30°C
• D 10°C

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Answer: B. 20°C

A drop in temperature means it gets colder, so we subtract: 30 - 10 = 20 degrees C. Adding would give 40, which is a rise.

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