SOLUTION:
A 30% salt solution is prepared by mixing a 20% salt solution and a 45% salt solution. How many liters of each must be used to produce 60 L of the 30% salt solution?
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Algebra.Com
Question 256167:
A 30% salt solution is prepared by mixing a 20% salt solution and a 45% salt solution. How many liters of each must be used to produce 60 L of the 30% salt solution?
Must use 2 variables.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
.45X+.20(60-X)=.30*60
.45X+12-.20X=18
.25X=18-12
.25X=6
X=6/.25
X=24 LITERS OF 45% SALT SOLUTION IS USED.
.45*24+.20(60-24)=.30*60
10.8+.20*36=18
10.8+7.2=18
18=18
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