Michael J. answered 04/27/15
Tutor
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Effective High School STEM Tutor & CUNY Math Peer Leader
We can set up a proportion to determine the number of women.
Ratio = men / women:
5 / 3 = 15 / x
where x is the number of women.
Cross multiply.
5x = 45
x = 9
There are 9 women in the room.