PMT 109 Food Service Sanitation Practice Test

What is the Celsius equivalent of 171 degrees Fahrenheit?

70 degrees C 77 degrees C 75 degrees C 80 degrees C

Correct Answer:

77 degrees C

Explanation:

Convert Fahrenheit to Celsius using C = (F − 32) × 5/9. For 171 F, subtract 32 to get 139; multiply by 5 to get 695; then divide by 9 to get about 77.22. So the exact result is roughly 77.2 degrees Celsius. Rounding to the nearest whole degree gives 77 degrees Celsius, which matches the option presented. For context, 75 C equals 167 F and 80 C equals 176 F, so 171 F lies between them; the closest whole-number Celsius value to the exact conversion is 77.

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