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Of 10 people in an office, 6 are women and 4 are older than 30. Of the people over 30, 2 are women. Which is the probability that one of the people is a woman or over 30?

User Svena
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2 Answers

7 votes
4/15 is answer
hope this helped!
User Denis Dmitrienko
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4 votes

Given:

Total number of people in the office = 10

Number of women = 6

Number of people older than 30 = 4

Number of people older than 30 who are women = 2

Let's find the probability that one of the people is a woman or over 30.

• To find the probability, apply the formula:


P(\text{Woman }\cup\text{ over 30)= }P(\text{woman) + P(over 30) - P(woman }\cap\text{ over 30)}

Thus, we have:


P(\text{woman or over 30) = }(6)/(30)+(4)/(30)-(2)/(30)=(6+4-2)/(30)=(8)/(30)=(4)/(15)

Therefore, the probability that one of the people is a woman or over 30 is:


(4)/(15)

ANSWER:


(4)/(15)

User Haphil
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