There were some people on a train. 19 people get off the train at the first stop. 17 people then get on the train. Now there are 63 people on the train. How many people were on the train to begin with?

Answer 65

The best way to approach this problem is to work backwards. Starting with 63 people on the train at the end, we can then subtract the 17 people who got on the train, giving us 46 people. Then, we add the 19 people back on who got off at the first stop, giving us an original train car full of 65 people.

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