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Senior Manager
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Joined: 25 Jun 2009
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Mixtures [#permalink] New post 10 Dec 2009, 21:26
Some part of a 50% solution of acid was replaced with an equal amount of 30% solution of acid. If, as a result, 40% solution of acid was obtained, what part of the original solution was replaced?


* 1/5
* 1/4
* 1/2
* 3/4
* 4/5

Can someone help me with this? I am not understanding their solution very well.
CIO
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Re: Mixtures [#permalink] New post 11 Dec 2009, 01:11
Hi,
This question has already been discussed here:
m25-75372.html

Please search this thread for the questions that were already discussed:
gmat-club-tests-master-threads-all-tests-78599.html

If you can't find the discussion you need in the thread above, please use Forum Search or Custom Google Search available at the top of every page.

Please do not create duplicate topics. Thank you for cooperation :).
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Re: Mixtures   [#permalink] 11 Dec 2009, 01:11
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