Final answer:
0°C is colder than 20°F.
Step-by-step explanation:
0°C is colder than 20°F.
On the Celsius scale, the freezing point of water is 0°C and the boiling point is 100°C. On the Fahrenheit scale, the freezing point of water is 32°F and the boiling point is 212°F. Since 0°C is below the freezing point of water on both scales, it is colder than 20°F.
Therefore, 0°C is colder than 20°F.