SOLUTION: Train A and Train B depart at the same time from the same station for a destination 4,000 miles away. If Train A travels at constant rate of 170 miles per hour and Train B trave

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Question 399432: Train A and Train B depart at the same time from
the same station for a destination 4,000 miles away.
If Train A travels at constant rate of 170 miles per
hour and Train B travels at a constant rate of 200
miles per hour, how far will the two trains be from
each other, in miles, when Train B reaches its destination?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

 D = r*t or t = D/r

Train B reaches its destination in:

 4000mi/200mph = 20h  

Distance Train A will have traveled in 20hr

 170*20 = 3400mi

At this time they will be (4000mi-3400mi) or 600mi apart