A train leaves New York for Boston. Five minutes later another train leaves Boston for New York,
having a double speed.
Which train will be closer to New York, when they encounter?

Answer

Of course, when the trains encounter, they will be approximately the same distance away from New York. The New York train will be closer to New York by approximately one train length because they're coming from different directions. That is, unless you take "meet" to mean "pefectly overlap".

A train leaves New York for Boston. Five minutes later another train leaves Boston for New York,
having a double speed.
Which train will be closer to New York, when they encounter?

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