If airplane flew 3 hours with a 60 mph head wind. The return trip with a tail wind of the same speed took 2 hours. Find the speed of the plane in still air?
If a plane flew 3 hours with 60 mph and returned with same tail wind and it took 2 hours then it would take 2.5 hours with still air. ChaCha On!
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About Hours
An hour consists of sixty minutes. We measure out our days in hours; when we are having fun, an hour is short. While we are suffering, an hour is very very long. In the Middle Ages (the 5th century to the 15th century) Christian monks and artists created 'Books of Hours.' They contained prayers and psalms for each hour of the day. They were 'illuminated,' that is, their texts were illustrated in gold ink and brilliant colors. The Cloisters Museum in NYC has a wonderful collection of Books of Hours.
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