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Question 1024347: Students in a middle school must choose to take either Band or Chorus. In a given academic year, 60% of the pupils choose Band and the rest choose Chorus. 30% of the students who are taking Band are girls, and 70% who are taking Chorus are girls. If a student is randomly selected from this academic year, what is the probability that it is a boy?
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website!
30% of 60% is 18%, so 18% of the population is girls taking band. 70% of 40% is 28%, so 28% of the population is girls taking chorus. Hence, 18% plus 28% of the population are girls, or 46%. What's left of 100% are boys, presuming, of course, that there aren't any students in the population who are confused about their gender identity and were not counted in the percentage calculations.
John
My calculator said it, I believe it, that settles it
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