Suppose there is a 1.1 Degrees F drop in temp. for every thousand ft. that an airplane climbs into the sky. If the temp. on the ground is 53.7 Degrees F, what will be the temp. when the plane reaches the altitude of 11,000 ft?
Multiply the 1.1 degF by 11 and subtract the result from 53.7 degF
+122 
