Question

Two thermometers are calibrated, one in degrees Celsius and the other in degrees Fahrenheit.
At what temperature are their readings numerically the same?
Answer in units of K.

Answer 1

To change degrees Celsius in degrees Fahrenheit, the formula is:

$$F = 1.8C +32$$

So,

$$C = 1.8C +32$$

$$C = -40$$

$$T=-40+273.15=233.15\ K$$