At what temperature are the Celsius and Fahrenheit temperature readings numerically identical?
Answer and explanation
Correct answer: C. -40 degrees
- Step 1: The conversion formula is F = (9/5) C + 32. Setting F = C = x. Step 2. x = (9/5) x + 32 => x - (9/5) x = 32 => (-4/5) x = 32 => x = -40. Answer: -40 degrees. Why not the others: 0 degrees Celsius corresponds to 32 degrees Fahrenheit; 40 degrees Celsius equals 104 degrees Fahrenheit; -32 degrees Celsius equals -25.6 degrees Fahrenheit.
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