SOLUTION: Suppose a student is selected at random from 80 students where 30 are taking mathematics, 20 are taking chemistry,and 10 are taking mathematics and chemistry. Find the probability

Question 1063415: Suppose a student is selected at random from 80 students where 30 are taking mathematics, 20 are taking chemistry,and 10 are taking mathematics and chemistry. Find the probability that the student is taking mathematics or chemistry.
Answer by math_helper(2461) (Show Source): You can put this solution on YOUR website!
Since 30+20+10 = 60, this number of the 80 students are taking mathematics or chemistry.
You select a student at random, if they are one of the above 60 students, then they fall in the category of taking mathematics or chemistry.
Pr(student is taking mathematics or chemistry)=
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