Two cars start at the same time from opposite ends of a highway that is 60 miles long. One car is riding at 13 mph and the second car is riding at 17 mph. How long after they begin will they meet?	Select the correct option
A) 0.75
B) 1
C) 1.25
D) 1.5
E) 2.0

Rationale: "as cars are moving in opposite directions their speeds will be added . so their relative speeds : 17 + 13 = 30 mph total distance to be covered = 60 miles . time taken would be : 60 miles / 30 mph = 2.0 hours e is the answer ."
Answer: E