SOLUTION: Jones has a 90% solution of boric acid in his pharmacy, which he reduces to the required strength by adding distilled water. How much solution and how much water must he use to get
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Question 675973: Jones has a 90% solution of boric acid in his pharmacy, which he reduces to the required strength by adding distilled water. How much solution and how much water must he use to get 2 quarts of 10% solution?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = quarts of water to be added
Let = quarts of 90% boric acid solution to be used
= quarts of boric acid in 90% solution
---------------
(1)
(2)
-----------------
(2)
(2)
(2)
and
(1)
(1)
(1)
(1)
16/9 of a quart of water is to be added
2/9 of a quart of 90% boric acid solution is to be used
check:
(2)
(2)
(2)
(2)
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