There are 40 people at a reception for international students. The students, boys and girls, are from Peru and China. 18 of all the students are boys, and 12 of all the students are Peruvian. 7 of the Peruvians are girls. Given that a student is a boy, what is the probability that he is Peruvian? A Venn diagram will help you to answer this question.
Reduce fraction to its lowest terms?
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5/18 did you draw the venn diagram?
There are 12 peruvians and 7 are girls, so the remaining 5 are boys. there are 18 total boys. 5/18
where Pe is peruvian, B is boy, and PeB is the intersection of Pe and B