There are 12 men in a class of 30 college students. What is the proportion of men to women in the class?
Let w = women in class w = 30 — 12 = 18
Proportion of men to women is 12 / 18 = i
Thus, the proportion of men to women is 2:3
Check: Find number of men in class of 30 with 18 women.
Let m = number of men
m/18 = 2/3
m = 18 * 2/3 = 12, the correct number of men.
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