SOLUTION: mary wants to make 20 gal. of a 52% acid solution by mixing together a 84% acid solution and a 4% acid solution. how much of each must she use?

Question 986344: mary wants to make 20 gal. of a 52% acid solution by mixing together a 84% acid solution and a 4% acid solution. how much of each must she use?

Found 2 solutions by josgarithmetic, Alan3354:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Only if density does not matter, you can simply follow this example:
single variable for two-part mixture - video example
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
mary wants to make 20 gal. of a 52% acid solution by mixing together a 84% acid solution and a 4% acid solution. how much of each must she use?
----------------------
e = amount of 84%
f = amount of 4%
-----
e + f = 20 (total solution)
84e + 4f = 20*52 (total acid)
-----

RELATED QUESTIONS
Jack wants to make 15 fl. oz. of a 12% acid solution by mixing together a 20% acid... (answered by lynnlo)
A chemist wants to make 250 ml of 30% acid solution by mixing a 20% acid solution with a (answered by checkley77)
Abhasra wants to make 10 L of a 52% acid solution by mixing together a 65% acid solution... (answered by josgarithmetic)
alberto wants to make 10 liters of a 13% solution by mixing together a 10% acid solution... (answered by TimothyLamb)
Scott wants to make 15 L of a 68% acid solution by mixing together a 75% acid solution... (answered by ptaylor)
Beth wants to make 11.6 fl. oz. of a 45% acid solution by mixing together a 22% acid... (answered by mananth)
A chemist wants to make 52 mL of a 17% acid solution by mixing a 11% acid solution and an (answered by richwmiller)
A chemist wants to make 52 mL of a 17% acid solution by mixing a 11% acid solution and an (answered by mananth)
A chemist wants to get a 50% solution by mixing 8 L of 60% acid solution with 20% acid... (answered by josgarithmetic)