SOLUTION: a chemist is going to mix a 15% acid solution with a 45% acid solutionm how many liters of each solution should she mix in order to get 48 liters of a 20% acid solution?

Question 305402: a chemist is going to mix a 15% acid solution with a 45% acid solutionm how many liters of each solution should she mix in order to get 48 liters of a 20% acid solution?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
She ends up with liters of acid in
48 liters of solution
Let = liters of 15% solution to use
Let = liters of 45% solution to use
(1)
(1)
(1)
and
(2)
Multiply both sides of (2) by and
subtract (2) from (1)
---------------------
(1)
(2)

and

She must mix 40 liters of the 15% solution
with 8 liters of the 45% solution
check answer:
(1)
(1)

OK

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