Question 902315
How many liters of a 85% acid solution must be added to 12 liters of a 25% acid solution to produce a 49% acid solution?
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let x=amt of 85% solution to add
85%x+25%*12=49%(12+x)
.85x+3=5.88+.49x
.36x=2.88
x=8
amt of 85% solution to add=8 liters