Question 871590: How many ounces of a 31% alcohol solution and a 41% alcohol solution must be combined to form 40 ounces of a 40% alcohol solution? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = ounces of 31% solution needed
Let = ounces of 41% solution needed
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(1)
(2)
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(2)
(2)
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Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)
and, since
(1)
(1)
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4 ounces of 31% solution are needed
36 ounces of 41% solution are needed
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check:
(2)
(2)
(2)
(2)
(2)
OK
