Which Fahrenheit value corresponds to 40 degrees Celsius?

• A. 98
• B. 126
• C. 104
• D. 158

Answer: (C)

To convert Celsius to Fahrenheit, use F = (C × 9/5) + 32. For 40 degrees Celsius, multiply 40 by 9/5 (which is 1.8) to get 72, then add 32 to get 104. So the Fahrenheit value is 104. A quick check: 37 C is about 98.6 F, so 40 C should be a bit warmer—around 104 F—which fits. The other numbers are not close to the correct conversion.