Assuming a base temperature of 18°C, how many cooling degree-days are there for a day with a maximum temperature of 35°C and a minimum temperature of 18°C?

Question

Quizplus · Accepted Answer

The cooling degree-day value for a day is calculated by subtracting the base temperature from the average of the day's maximum and minimum temperatures. 
Average of maximum and minimum temperature = (35+18)/2 = 26.5°C 
Cooling degree-days = 26.5°C - 18°C = 8.5°C 
Therefore, the answer is C) 7.5.

Assuming a Base Temperature of 18°C, How Many Cooling Degree-Days