Train A is 13 miles ahead of Train B, which is traveling the same direction along the same route as Train A. If Train A is traveling at an average speed of 37 miles per hour and Train B is traveling at an average speed of 43 miles per hour, how long will it take Train B to overtake and drive 17 miles ahead of Train A?  Select:
A) 4 hours
B) 2 hours
C) 2 hours 30 minutes
D) 5 hours
E) 3 hours 20 minutes
Relative speed = 43-37= 
<gadget id="calculator">43-37</gadget>
<output>6</output>
6 miles per hour   Dist required= 13+17= 
<gadget id="calculator">13+17</gadget>
<output>30</output>
30 miles   Time taken to overtake= 30/6= 
<gadget id="calculator">30/6</gadget>
<output>5</output>
5 hours. 5 hours is the answer.
<result>D</result>
Train A is 13 miles ahead of Train B, which is traveling the same direction along the same route as Train A. If Train A is traveling at an average speed of 37 miles per hour and Train B is traveling at an average speed of 43 miles per hour, how long will it take Train B to overtake and drive 17 miles ahead of Train A?