SOLUTION: Of 100 persons in a company, 70 r married, 80 r college graduates, and 60 are both married and college graduates. Find the probability that if a person is selected at random from

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Question 1102994: Of 100 persons in a company, 70 r married, 80 r college graduates, and 60 are both married and college graduates. Find the probability that if a person is selected at random from this group, the person will be: a. Married or not a college graduate....b. Married and a college graduate....c. Married and not a college graduate.
Answer by ikleyn(52858) About Me  (Show Source):
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Of 100 persons in a company, 70 r married, 80 r college graduates, and 60 are both married and college graduates.
Find the probability that if a person is selected at random from this group, the person will be: 

a. Married or not a college graduate....  


b. Married and a college graduate....     Their number is 60.          The probability is  60%2F100 = 3%2F5.


c. Married and not a college graduate.    Their number is 70-60 = 10.  The probability is  10%2F100 = 1%2F10.