SOLUTION: I have one solution of 70% acid 30% water and another that is 20% acid 80% water. How much of each would I need to attain 5 ounces of 65% acid 35% water.

Question 370043: I have one solution of 70% acid 30% water and another that is 20% acid 80% water. How much of each would I need to attain 5 ounces of 65% acid 35% water.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let A be the amount of 70% solution, B the amount of 20% solution.
Volume:
1.
.
.
Concentration:

2.
Multiply eq. 1 by (-4) and add to eq. 2,

ounces
.
.
Then from eq. 1,

ounces
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