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I am having trouble with this motion problem.A jet travels 1,890 miles in 3 hours. flying against the same wind,the plane makes a return trip in 3 1/2 hours.Find the wind speed and the plane`s airspeed.My book gives the answer,but I just can not understand the concept of how they get the problem.Thanks for any help I can get.

  • math -

    divide the top equation by 3, and the second equation by 3.5


    add the equations

    solve for V, W

    Take if from here.

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