Would someone be able to explain how to get the answer to the following question?
13) The QFE for the aerodrome is currently 985 hectopascals. The QNH you have been given is 1031 hectopascals. Approximately what would you expect the aerodrome elevation to be? A 1380 ft B 690 ft C 2663 ft D 875 ft
Correct answer is A.