Question 359726
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Hi
Let x reprsent the milliliters of an 18% solution to add
.30*150ml + .18x = .20(150ml + x)
.30*150ml + .18x = .20*150ml + .20x
.10*150ml = .02x
750ml = x
checking our answer
45 + 135 = .20*900 = 180