SOLUTION: two planes leave at the same time. One flies west at 300 km/hr, the other flies east at 450 km/ hr. In how many hours will they be 2250km apart?

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Question 941052: two planes leave at the same time. One flies west at 300 km/hr, the other flies east at 450 km/ hr. In how many hours will they be 2250km apart?
Answer by Fombitz(32388) About Me  (Show Source):