Question 1130448
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{{{300/p}}} = {{{140/(p-80)}}}


<U>ANSWER</U>.  The plane speed is  p = 150 miles per hour.



<U>CHECK</U>.  Left  side of the equation is  {{{300/150}}} = 2.

        Right side of the equation is  {{{140/(150-80)}}} = 2.     ! Correct !
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