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Question that relates to this part of the forum but is from

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Senior Manager
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Question that relates to this part of the forum but is from [#permalink] New post 04 Nov 2012, 13:26
Mckinsey PST.

I have attached both the question and the answer.
It is very tricky and I don't even understand the answer.
I already get stuck in the first paragraph where they calculate
the margin of 33%.
Anyone?
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Senior Manager
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Re: Question that relates to this part of the forum but is from [#permalink] New post 05 Nov 2012, 23:52
even I do not understand the passage.
Re: Question that relates to this part of the forum but is from   [#permalink] 05 Nov 2012, 23:52
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