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math

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chandni purchased some parrots.20%flew away and 5% died.of the remaining 45% were sold.now 33 parrot remain.how many parrot Chandni purchased.

  • math -

    I will assume that 20% of the original, and 5% of the original.
    let the number he had be n
    so now he has 75% of x left or 3x/4
    of those he sold 45%, leaving him with 55% of the remaining

    (55/100)(3x/4) = 33
    times 400
    165x = 13200
    x = 13200/165 = 80

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