Question 289604
.11X+.07(320-X)=.08*320
.11X+22.4-.07X=25.6
.04X=25.6-22.4
.04X=3.2
X=3.2/.04
X=80 ML OF THE 11% VINEGAR.
320-80=240 ML OF 7% VINEGAR.
PROOF:
.11*80+.07*240=25.6
8.8+16.8=25.6
25.6=25.6