SOLUTION: What quantity of a 40% acid solution must be mixed with a 10% solution to produce 300 quarts of a 30% solution?
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Question 640216: What quantity of a 40% acid solution must be mixed with a 10% solution to produce 300 quarts of a 30% solution?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = quarts of 40% solution needed
Let = quarts of 10% solution needed
given:
(1)
(2)
------------------------
(2)
(2)
(2)
Subtract (1) from (2)
(2)
(1)
and since
(1)
(1)
200 quarts of 40% solution is needed
100 quarts of 10% solution is needed
check:
(2)
(2)
(2)
(2)
(2)
OK
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