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anonymous
 one year ago
An airplane flies against the wind from A to B in 8 hours. The same airplane returns from B to A, in the same direction as the wind, in 7 hours. Find the ratio of the speed of the airplane (in still air) to the speed of the wind.
anonymous
 one year ago
An airplane flies against the wind from A to B in 8 hours. The same airplane returns from B to A, in the same direction as the wind, in 7 hours. Find the ratio of the speed of the airplane (in still air) to the speed of the wind.

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mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The airplane speed in still air is v. The wind speed is w. The plane speed with the wind is v + w. The plane speed against the wind is v  w.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1440954808356:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1\( \begin{cases} d = 8(v  w\\ d = 7(v + w) \end{cases} \) \( \begin{cases} d = 8v  8w \\ d = 7v + 7w \end{cases} \) \(8v  8w = 7v + 7w\) \(v = 15w\) \(\dfrac{v}{w} = \dfrac{15}{1} \)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can you help with a few more

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Yes. Pls start a new post for each new problem. I''ll look for them.
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