SOLUTION: If 2 trains leave a station in opposite directions and one is going 65 mph and the other 55 mph, how long will it be before they are 720 miles apart? Please EXPLAIN the process. I

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Question 632876: If 2 trains leave a station in opposite directions and one is going 65 mph and the other 55 mph, how long will it be before they are 720 miles apart? Please EXPLAIN the process. I totally forget, and I need to know before the end of the day.
Answer by MathTherapy(10557) About Me  (Show Source):
You can put this solution on YOUR website!

If 2 trains leave a station in opposite directions and one is going 65 mph and the other 55 mph, how long will it be before they are 720 miles apart? Please EXPLAIN the process. I totally forget, and I need to know before the end of the day.

Their time to be a certain distance apart will be the distance, divided by the sum of their speeds, OR

720%2F%2865+%2B+55%29+=+T, with T being time

720%2F120+=+T

T, or time taken to be 720 miles apart = highlight_green%286%29 hours

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