SOLUTION: Two airplanes, travelling in opposite directions, leave the airport at the same time. If one plane flies at 480 miles/hour and the other at 520 miles/hour, how long will it take be
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Question 663247: Two airplanes, travelling in opposite directions, leave the airport at the same time. If one plane flies at 480 miles/hour and the other at 520 miles/hour, how long will it take before they are 2000 miles apart? Answer by solver91311(24713) (Show Source):
