Question

The probability that a comic book reader in a particular city prefers comics published by Company A is 25%. The probability that a comic book reader in the city is male is 70%. If the probability of a comic book reader in the city being a male, given that the reader prefers Company A's comics, is 40%, what is the probability of the reader preferring Company A's comics, given that the reader is a male?

0.14

0.25

0.30

0.45

Answer 1

@YanaSidlinskiy

Answer 2

Do you know swami?

Answer 3

wait

Answer 4

ok

Answer 5

@tkhunny @AnswerMyQuestions

Answer 6

@phi

Answer 7

Please stop tagging people and START showing your own work.

Build as 2x2 grid
Label the columns Male and Female
Label the rows Cop A and Comp B
Fill in what you know.

Answer 8

Now what?

Answer 9

The comic book A is 40% of the city reading it, so would you multiply 70% by .4? Because that is the total population of males that read comics.

Answer 10

That last clue tells you how to split up the 25% 40% Male and 60% Female. What do you get?

Answer 11

28 males.

Answer 12

We do not need to know how many females since the question is referring to males.

Answer 13

?? You've only 25 total. 25 * 0.40 = 10

Answer 14

In a learning environment, feel free to fill in the entire box. You might learn something. If you are taking the GMAT or LSAT and are SUPER pressed for time, you may wish to think like that.