Bunuel wrote:
1/3 of the cookies in a jar are chocolate chip, 2/3 of the remaining cookies are peanut butter, and the rest of the cookies are white chocolate. If 20 cookies are white chocolate, how many cookies are in the jar?
A 40
B 60
C 70
D 90
E 100
we can solve < 30 seconds this quesiton
given x/3 are chocolate cookies
so all options except b & d are valid
further we can notice that option b ends up being a fraction where as d stands as an integer
so IMO D is correct..
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