Answer is B.
Statement 1 -- this is insufficient, because we do not know anything about the percentage breakouts of males or females, or of those who applied to college.
Statement 2: Sufficient. Let m = number of males, and f = number of femals. m+f = T (total student body). We can set up an equation for the perccentage of people who applied to college. (.72m + .8f)/T = .75
.75m + .75f = .72m + .8f
.03m = .05f
The ratio of males to females in this group is given by m/f = 5/3
Now we can find out the fraction of males represented in the total student body, because we know m + f = T. f = 3/5m, so m + 3/5m = T.
8/5m = t
m = 5/8 t
Therefore, males represent 5/8 of the student body.
Makes complete sense now! Thanks
OA is B.