Question

What is the temperature at which °C is equal to °F?

• A. 0
• B. 32
• C. – 40
• D. – 32

Hint:

To convert between Celsius and Fahrenheit, use the formula \( °F = \frac{9}{5} (°C) + 32 \). 
You can calculate the point where both scales meet by setting them equal to each other.

Answer 1

The Correct Option is C

The relationship between Celsius and Fahrenheit is given by the formula: \[ °F = \frac{9}{5} (°C) + 32 \] For °C = °F, we substitute into the formula: \[ ° = \frac{9}{5} (°) + 32 \] Solving this, we get the answer \( ° = -40 \). 
Conclusion: 
The temperature at which Celsius is equal to Fahrenheit is -40°.