SOLUTION: A train leaves Little Rock, Arkansas, and travels north at 90 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 1136344: A train leaves Little Rock, Arkansas, and travels north at 90 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 680 kilometers apart?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Add their rates of travel
Let = time in hrs
In 4 hrs they are 680 km apart
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check:
and
and
OK
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