Answer:
b) 72 F°
Explanation:
In Fahrenheit, the difference between freezing and boiling is 180 F° (that’s 212 °F minus 32 °F). In Celsius, the difference is 100 C° (by definition of 0 °C and 100 °C for those two points). So 100 C° = 180 F°; dividing by 100 gives us 1 C° = 1.8 F°.
So a difference of 40 C° is equal to 40 times (1.8 F°) = 72 F°.
Notice I am using °F and °C for actual temperatures, and F° and C° for temperature DIFFERENCES.
