The temperature at which the Celsius and Fahrenheit scales read the same is
A)40ºC
B)-40ºC
C)20ºF
D)68ºF
E)100ºC

Question

Quizplus · Accepted Answer

To find the temperature at which the Celsius and Fahrenheit scales read the same, we can set the formulas for converting between the two scales equal to each other and solve for temperature (T):
C = (5/9)(F-32)
C = F
Substituting F for C in the first equation gives:
F = (9/5)(F-32)
Solving for F:
F = -40
Therefore, the temperature at which the Celsius and Fahrenheit scales read the same is -40ºC/F.

The Temperature at Which the Celsius and Fahrenheit Scales Read