Yesterday morning at 8 a.m. the temperature was -14°F. At noon it was 10 degrees warmer. The temperature increase between noon and and 4 p.m. was twice the temperature increase between 8 a.m. and noon. What was the temperature at 4 p.m?
°F
Twice a 10 degree increase is 20 degrees
10 + 20 = 30 degree increase from 8 am to 4 pm
-14 + 30 = 16 degrees F at 4 pm