Question 130791
.5X+.25(1000-X)=.45*1000
.5X+250-.25X=450
.25X=450-250
.25X=200
X=200/.25
X=800 ML OF 50% COPPER SOLUTION.
1000-800=200 ML OF 25% COPPER SOLUTION.
PROOF:
.5*800+.25*200=450
400+50=450
450=450