SOLUTION: A train leaves Washington and travels north at 85 miles per hour. Another train leaves at the same time and travels south at 60 miles per hour. How long before they are 580 miles

Question 665488: A train leaves Washington and travels north at 85 miles per hour. Another train leaves at the same time and travels south at 60 miles per hour. How long before they are 580 miles apart
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
You can think of one train as standing still and
the other moving away at the sum of their speeds

They will be 580 mi apart in 4 hrs

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