SOLUTION: In a small high school of 20 students, 6 students are taking algebra, 8 are taking geometry and 3 are taking both. How many students are not taking either?

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Question 200132: In a small high school of 20 students, 6 students are taking algebra, 8 are taking geometry and 3 are taking both. How many students are not taking either?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
"6 students are taking algebra", but 3 of those are taking both
so 3 are taking just algebra

"8 are taking geometry", but 3 of those are taking both
so 5 are taking just geometry

3 - both
3 - just algebra
5 - just geometry

11 students taking algebra/geometry ___ 9 students (20-11) not taking either