10% of employees are women with fair hair. 40% of fair-haired employees are women. What percent of employees have fair hair?
Answers:
A) 25
B) 30
C) 50
D) 55
E) 60
I came up with (A) 25   Think of 100 people total:   From the first fact, 10 of these are women with fair hair.   From the second fact, these 10 women make up 40% of the total fair haired population.   We can then make a ratio of 60:40 fair haired men to fair haired women.   This means that (60/40)*10 equals the number of fair haired men, which is 15 men with fair hair.   Add this 15 to the 10 women and get 25 fair haired men and women out of 100 total men and women.   25%   25
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10% of employees are women with fair hair. 40% of fair-haired employees are women. What percent of employees have fair hair?