Train A and Train B began traveling towards each other from opposite ends of a 500-mile long track at 1:00 PM. If Train A traveled at 35 miles per hour and Train B traveled at 15 miles per hour, at what time did the trains meet?  Choose the correct choice from the following options
A) 5:40 PM B) 6:00 PM C) 7:20 PM D) 11:00 PM E) 9:20 PM
This question tests your concepts of relative speed:   If two trains are moving in opposite direction, then distance will reduce at a rate of (Speed of 1 + Speed of 2)   If two trains are moving in same direction, then distance will reduce at a rate of (Speed of 1 - Speed of 2)   Here the trains are moving towards each other, hence in opposite direction.   Trains will cover the 500 mile track in a time of 500/(15 + 35) = 500/50= 
<gadget id="calculator">500/50</gadget>
<output>10</output>
10 hours   Trains started at 1:00 PM, there they will meet at 11:00 PM   Option 11:00 PM
<result>D</result>
Train A and Train B began traveling towards each other from opposite ends of a 500-mile long track at 1:00 PM. If Train A traveled at 35 miles per hour and Train B traveled at 15 miles per hour, at what time did the trains meet?