Dawson and Henry are in a relay race. Dawson runs the first leg of the course in 38 seconds. Henry runs the second leg of the course in 7 seconds. What was the average time they took to run a leg of the course?
Choose the correct option:
A) 20.5 B) 21.5 C) 22.5 D) 23.5 E) 24.5

Rationale: ( 38 seconds + 7 seconds ) / 2 = 22.5 seconds correct option is : c
Answer: C