Which of the following temperatures is equal to 20°C?

• A. 32°F
• B. 68°F
• C. 20°F
• D. 36°F

Answer: (B)

Verified step by step guidance

1. Understand the relationship between Celsius and Fahrenheit temperature scales. The conversion formula is: \(F = \frac{9}{5}C + 32\).
2. Identify the given temperature in Celsius, which is 20°C, and substitute it into the formula to find the equivalent Fahrenheit temperature.
3. Calculate the Fahrenheit temperature by multiplying 20 by \(\frac{9}{5}\) and then adding 32: \(F = \frac{9}{5} \times 20 + 32\).
4. Simplify the expression step-by-step: first multiply, then add to find the Fahrenheit value corresponding to 20°C.
5. Compare the calculated Fahrenheit temperature with the options provided to determine which one matches 20°C.