Question 105451
.50X+.25(200-X)=.35*200
.50X+50-.25X=70
.25X=70-50
.25X=20
X=20/.25
X=80 ML OF 50% SOLUTION.
200-80=120 ML OF 30& SOLUTION.
PROOF
.50*80+.25*120=.35*200
40+30=70
70=70