Reconstruct a question, answer pair from this explanation: (2*40+3*80)/5 = 64mph
Q: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
A:(D)