The ratio, by weight, of the four ingredients A, B, C, and D of a certain mixture is 4:7:8:12. The mixture will be changed so that the ratio of A to C is quadrupled and the ratio of A to D is decreased. The ratio of A to B will be held constant. If B will constitute 20% of the weight of the new mixture, by approximately what percent will the ratio of A to D be decreased?
A) 15%
B) 25%
C) 35%
D) 45%
E) 55%
A) 15%
B) 25%
C) 35%
D) 45%
E) 55%
