Question

At what temperature are the Celsius and Fahrenheit equal?

• A. 40 degrees
• B. -40 degrees
• C. 0 degrees
• D. 100 degrees

Answer 1

Answer:

B. -40 degrees

Fahrenheit and Celsius are measurements of temperature and are related to each other as follows:

C = (F − 32) × 59

Where C is the temperature in Celsius and F is the temperature in Fahrenheit.

Since we need temperature and celsius to be equal:

Now, let C = F = x

So,

x = (x − 32) × 59

9x = 5x − 160

4x = −160

x = − 40

Therefore, − 40⁰C = − 40⁰F

That is, the Fahrenheit and Celsius scales have one point at which they intersect. They are equal at -40 °C and -40 °F.