Of the 720 students at a certain university, 25 percent are

Of the 720 students at a certain university, 25 percent are
seniors. If x seniors were to graduate early and leave the
university and no additional students entered or left the
university, what value of x would reduce the number of seniors
at the university to 20 percent?


A) 30
(B) 36
(C) 42
(D) 45
(E) 48