The highest temperature ever recorded in Southlandia is -48 degrees Fahrenheit. The highest temperature ever recorded in Northlandia is 21 degrees Fahrenheit. The highest temperature recorded in Midlandia is -3 degrees Fahrenheit. What is the average highest temperature of these 3 countries?
-48 + 21 + (-3) = <<-48+21+(-3)=-30>>-30
-30/3 = <<-30/3=-10>>-10 degrees
The average highest temperature recorded in Southlandia, Northlandia, and Midlandia is -10 degrees Fahrenheit.
#### -10