The average age of three people running for election is 42. A fourth person joins the race and the average drops to 40. What is the fourth person's age?

A 32

B. 34

c. 35

D. 36

E 40

An airplane is flying at an elevation of 5150 ft, directly above a straight highway. two motorists are driving cars on the highway on opposite sides of the plane, and the angle of depression to one car is 35 ̊ and to the other is 52 ̊. how far apart are the cars?