Homework Help: math

Posted by ASDFG on Thursday, July 19, 2012 at 11:49am.

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 - Reiny, Thursday, July 19, 2012 at 2:24pm
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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