Question 151574
.10X+.02*40=.05(40+X)
.10X+.8=2+.05X
.10X-.05X=2-.08
.05X=1.2
X=1.2/.05
X=24 OZ. OF 10% BAKING SODA MUST BE ADDED.
PROOF:
.10*24+.02*40=.05(40+24)
2.4+.8=.05*64
3.2=3.2