Question 990543
x=23% solution
45-x=17% solution
.23x+ 0.17(45-x)=45*0.20=9
.23x + 7.65-0.17x=9
0.06x=1.35
x=22.5 gal of 23%
45-x=22.5 gal
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Faster way.
If you mix them 1:1 you get 20%, so it will be half of 45 for each.