SOLUTION: Of 100 students surveyed, 80 were taking a math class and 75 were taking a science class. If 70 students were taking both math and science, how many were taking neither?

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Question 242338: Of 100 students surveyed, 80 were taking a math class and 75 were taking a science class. If 70 students were taking both math and science, how many were taking neither?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
100-(80-70)-(75-70)=100-10-5=85 STUDENTS TAKE MATH OR SCIENCE OR BOTH.
THUS 100-85=15 TAKE NEITHER.