brazil-enem 2012 Q139

brazil-enem · Other · enem__day2 Not Maths
On a blog of miscellaneous content, music, mantras and diverse information, ``Halloween Tales'' were posted. After reading, visitors could give their opinion by marking their reactions as: ``Fun'', ``Scary'' or ``Boring''. At the end of one week, the blog recorded that 500 distinct visitors accessed this post.
The following graph presents the result of the survey.
The blog administrator will draw a book among the visitors who gave their opinion on the ``Halloween Tales'' post.
Knowing that no visitor voted more than once, the probability that a person chosen at random among those who voted marked that the ``Halloween Tales'' story is ``Boring'' is most closely approximated by
(A) 0.09.
(B) 0.12.
(C) 0.14.
(D) 0.15.
(E) 0.18.
On a blog of miscellaneous content, music, mantras and diverse information, ``Halloween Tales'' were posted. After reading, visitors could give their opinion by marking their reactions as: ``Fun'', ``Scary'' or ``Boring''. At the end of one week, the blog recorded that 500 distinct visitors accessed this post.

The following graph presents the result of the survey.

The blog administrator will draw a book among the visitors who gave their opinion on the ``Halloween Tales'' post.

Knowing that no visitor voted more than once, the probability that a person chosen at random among those who voted marked that the ``Halloween Tales'' story is ``Boring'' is most closely approximated by\\
(A) 0.09.\\
(B) 0.12.\\
(C) 0.14.\\
(D) 0.15.\\
(E) 0.18.