Fahrenheit and Centigrade scales have the same readings at _____________________?
Correct answer: B. -40°
- A. -55°
- B. -40°
- C. -33°
- D. -58°
Explanation
Using F = (9/5)C + 32 and setting the two readings equal gives C = F = -40. This is the unique temperature at which the Fahrenheit and Celsius scales coincide.
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