SOLUTION: A chemist needs to mix a solution that is 15% herbicide with a solution that is 30% herbicide to make 20 liters of a solution that is 19.5% herbicide. How much of each solution sho
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Question 748971: A chemist needs to mix a solution that is 15% herbicide with a solution that is 30% herbicide to make 20 liters of a solution that is 19.5% herbicide. How much of each solution should she use? Answer by checkley79(3341) (Show Source):
You can put this solution on YOUR website! .30X+.15(20-X)=.195*20
.30X+3-.15X=3.9
.15X=3.9-3
.15X=.9
X=.9/.15
X=6 LITERS OF 30% MIX IS USED.
PROOF:
.30*6+.15(20-6)=.15*20
1.8+.15*14=3.9
1.8+2.1=3.9
3.9=3.9
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