Question 240401
.11X+.05*40=.07(40+X)
.11X+2=2.8+.07X
.11X-.07X=2.8-2
.04X=.8
X=.8/.04
X=20 ML. OF 11% ALCOHOL IS USED.
PROOF:
.11*20+2=.07(40+20)
2.2+2=.07*60
4.2=4.2