SOLUTION: two airplanes leave the airport at the same time, one heading west the other east. their average speeds differ by 10 miles per hour. after 1.5 hours, they are 520 miles apart. what
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Question 628193: two airplanes leave the airport at the same time, one heading west the other east. their average speeds differ by 10 miles per hour. after 1.5 hours, they are 520 miles apart. what is the approximate average speed of each plane over the 105 hours? Answer by solver91311(24713) (Show Source):
Divide the total distance by the given amount of time to get the SUM of the rates. Let be the rate of one plane and then must be the rate of the other plane. Add these two quantities: and set this equal to the sum rate you calculated at the beginning. Solve for and then calculate
John
My calculator said it, I believe it, that settles it
