New York and Boston are 220 miles apart. A train leaves Boston for New York and travels at 65 mph. One hour later, another train leaves New York for Boston and travels at 55 mph. Assume the tracks are straight paths and the trains maintain a constant speed. How far apart are the trains 1 hour before they meet?
If you have not tried to solve it, have a go now. For everyone else, the answer is after the break…
Think about it backwards. An hour before they meet, one train is 65 miles away from the meeting point, while the other is 55 miles. Add the two distances together and you’ll get 120 miles. Any other ways of working out the answer, or other solutions?
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