SOLUTION: In a class of 80 students, every student studies Economics or Geography or both. If 65 students study Economics and 50 study Geography, how many study both subjects?

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Question 770742: In a class of 80 students, every student studies Economics or Geography or both. If 65 students study Economics and 50 study Geography, how many study both subjects?
Answer by Jc0110(165) About Me  (Show Source):
You can put this solution on YOUR website!
Number of students who study both subjects
=(65+50)-80
=35