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Solution X is 10 percent alcohol by volume, and solution Y i

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Senior Manager
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Solution X is 10 percent alcohol by volume, and solution Y i [#permalink] New post 27 May 2014, 06:24
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Solution X is 10 percent alcohol by volume, and solution Y is 30 percent alcohol by volume. How many milliliters of solution Y must be added to 200 milliliters of solution X to create a solution that is 25 percent alcohol by volume?

A. 250/3
B. 500/3
C. 400
D. 480
E. 600
[Reveal] Spoiler: OA
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Intern
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Re: Solution X is 10 percent alcohol by volume, and solution Y i [#permalink] New post 17 Sep 2017, 23:38
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20+(3y/10)=25/100(200+y)
-1200=-2y
y=600
Re: Solution X is 10 percent alcohol by volume, and solution Y i   [#permalink] 17 Sep 2017, 23:38
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Solution X is 10 percent alcohol by volume, and solution Y i

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