Stiv wrote:
If 2/5 of the students at College C are business majors, what is the number of female students at College C?
(1) 2/5 of the male students at College C are business majors.
(2) 200 of the female students at College C are business majors.
Look at Picture:
Statement 1: Not Enough Info, but we can infer that Total Females = (X-Y)
Statement 2: Not Enough Info
Both statements Together:
\(\frac{2}{5}\)Y + 200 = \(\frac{2}{5}\)X
200 = \(\frac{2}{5}X\) - \(\frac{2}{5}Y\) (Factor out \(\frac{2}{5}\))
200 = \(\frac{2}{5}(X-Y)\)
\(200*\frac{5}{2} = (X-Y)\)
\(500 = (X-Y)\)
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