Algrebra

with a tailwind, a bird flew at a ground speed of 3 mi/h. Flying the same path against the same wind, the bird travels at a ground speed of 1.5 mi/h. What is the bird's air speed? What is the wind speed?

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asked by Nathan
  1. bird's air speed ---- x mph
    wind speed -------- y mph

    x+y = 3
    x-y= 1.5
    add them
    2x = 4.5
    x = 2.25 mph
    y = 0.75 mph

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    posted by Reiny

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