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A total of 20 interns and 15 full-time employees work in the 35 offices of a company, with one person working in each office. One office is selected at random to get an upgraded desk. What is the probability that the office selected will be that of a female intern?

Difficulty: Sub-600 Level, Probability, Data Sufficiency (DS)

Lunes 25 de julio de 2022, por hurtado claudio

A total of 20 interns and 15 full-time employees work in the 35 offices of a company, with one person working in each office. One office is selected at random to get an upgraded desk. What is the probability that the office selected will be that of a female intern?

(1) Of the interns, 15 of them are female.

(2) Of the interns, 5 of them are male.


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EXPLANATION:
Total number of people/offices = 35
What we need number of female intern/offices.

If this is known probability can be found. How.?
that number/ total number

(1) Of the interns, 15 of them are female.
We got that number sufficient.

(2) Of the interns, 5 of them are male.
Number of female intern = 15.
We got that number sufficient.

A is sufficient B is sufficient.
D is the answer.

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