At midday, two friends departed from a large oak tree growing on a straight road: one to the west on foot at a speed of 4 km/h, and the second to the east on a bicycle at a speed of 16 km/h. After a while, the bicyclist turned back and caught up with his friend (who continued to walk west) at 3 o’clock. What was the greatest distance between the friends and at which moment was it?
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It is hard to believe but oaks planted as acorns or young saplings catch up and pass 15-foot transplants in just a few years. Finally, large ...
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