SOLUTION: A train leaves Little​ Rock, Arkansas, and travels north at 80 kilometers per hour. Another train leaves at the same time and travels south at 80 kilometers per hour. How long wi

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Question 1185024: A train leaves Little​ Rock, Arkansas, and travels north at 80 kilometers per hour. Another train leaves at the same time and travels south at 80 kilometers per hour. How long will it take before they are 640 kilometers​ apart?
Answer by ikleyn(52790) About Me  (Show Source):
You can put this solution on YOUR website!
.

The distance between these trains increases linearly with the time at the rate of 80 + 80 = 160 kilometers per hour.


Therefore, they will be 640 kilometers away in  640%2F160 = 4 hours.    ANSWER

Solved.

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