Truck X is 13 miles ahead of Truck Y, which is traveling the same direction along the same route as Truck X. If Truck X is traveling at an average speed of 47 miles per hour and Truck Y is traveling at an average speed of 53 miles per hour, how long will it take Truck Y to overtake and drive 5 miles ahead of Truck X?  Choose the correct answer:
A) 2 hours
B) 2 hours 20 minutes
C) 2 hours 30 minutes
D) 2 hours 45 minutes
E) 3 hours
Relative speed = 53-47= 
<gadget id="calculator">53-47</gadget>
<output>6</output>
6 miles per hour   Dist required= 13+5= 
<gadget id="calculator">13+5</gadget>
<output>18</output>
18 miles   Time taken to overtake= 18/6= 
<gadget id="calculator">18/6</gadget>
<output>3</output>
3 hours.   3 hours is the answer.
<result>E</result>
Truck X is 13 miles ahead of Truck Y, which is traveling the same direction along the same route as Truck X. If Truck X is traveling at an average speed of 47 miles per hour and Truck Y is traveling at an average speed of 53 miles per hour, how long will it take Truck Y to overtake and drive 5 miles ahead of Truck X?