16. A train departs from A to B at 5 in the morning, traveling 120 kilometers per hour as originally planned, and arrives at B at 3 in the afternoon, but the actual arrival time is 5 in the afternoon, 2 hours late. Ask how many kilometers the train actually travels per hour? <br><br>17. A car drove from A to B at 8 o'clock in the morning, traveling 60 kilometers per hour according to the original plan, and arrived at B at 4 o'clock in the afternoon. But actually arrived 2 hours late, how many kilometers does this car actually travel per hour?
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