SOLUTION: Find the amount of 6 percent acid solution and the amount of a 14 percent acid solutions pat should combine to prepare 50cc of 12 percent solutions

Question 607400: Find the amount of 6 percent acid solution and the amount of a 14 percent acid solutions pat should combine to prepare 50cc of 12 percent solutions
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = cc's of 6% solution
Let = cc's of 14% solution
= cc's of acid in 6% solution
= cc's of acid in 14% solution
--------------------------------
(1)
(2)
----------------------------
(2)
(2)
(2)
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)

and, since
(1)
(1)
(1)
--------------
12.5 cc's of 6% solution are needed
37.5 cc's of 14% solution are needed
check:
(2)
(2)
(2)
(2)
(2)
(2)
OK
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