Multiple choice general knowledge science & technology

The temperature which has the same reading on both Fahrenheit and Celsius scales is

  1. 40

  2. -40

  3. 0

  4. 100
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

-40° is the temperature where Fahrenheit and Celsius scales intersect. This can be derived from F = (9/5)C + 32. Setting F = C gives -40° as the solution. At 0°, F = 32°. At 40°C, F = 104°, and at 100°C, F = 212°, so none of these are equal.

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