Question 215746
.60X+.19*70=.50(70+X)
.60X+13.3=35+.5X
.60X-.50X=35-13.3
.10X=21.7
X=21.7/.1
X=217 GALLONS OF 60% IS USED.
PROOF:
.6*217+.19*70=.5(70+217)
130.2+13.3=.5*287
143.5=143.5