Steve traveled the first 2 hours of his journey at 40 mph and the last 3 hours of his journey at 80 mph. What is his average speed of travel for the entire journey?
Options:
(A) 61mph
(B) 62mph
(C) 63mph
(D) 64mph
(E) 65mph OK. Let's think. Some random thoughts first:
user
(2*40+3*80)/5 = 64mph The answer: (D).
assistant