Question 628193
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Divide the total distance by the given amount of time to get the SUM of the rates.  Let *[tex \LARGE r] be the rate of one plane and then *[tex \LARGE r\ +\ 10] must be the rate of the other plane.  Add these two quantities:  *[tex \LARGE r\ +\ (r\ +\ 10)] and set this equal to the sum rate you calculated at the beginning.  Solve for *[tex \LARGE r] and then calculate *[tex \LARGE r\ +\ 10]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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