Question 126581
.50X+.20(40-X)=.425*40
.5X+8-.2X=17
.3X=17-8
.3X=9
X=9/.3
X=30 GALLONS OF 50% ARE REQUIRED.
40-30=10 GALLONS OF 20% IS REQUIRED.
PROOF:
.5*30+.2*10=17
15+2=17
17=17