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M10:Q23 - DS

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Senior Manager
Senior Manager
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Joined: 08 Jun 2010
Posts: 390

Kudos [?]: 99 [0], given: 13

Location: United States
Concentration: General Management, Finance
GMAT 1: 680 Q50 V32
Re: M10:Q23 - DS [#permalink]

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New post 18 Jun 2012, 01:23
Water acid solution Concentration
80-80a 80a 80 a
X 80a 80+X a/Y

a/Y = 80a/(80+X)
1/Y = 80/(80+X)
Since there is no a in the equation --> Answer is E.

Kudos [?]: 99 [0], given: 13

Intern
Intern
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Joined: 19 Oct 2011
Posts: 15

Kudos [?]: 3 [0], given: 1

Concentration: Technology, Operations
GMAT 1: 690 Q49 V34
WE: Information Technology (Computer Software)
Re: M10:Q23 - DS [#permalink]

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New post 17 Jun 2013, 10:23
E is the right answer. Irrespective of either statements, you still cannot find the initial concentration level of acid

Kudos [?]: 3 [0], given: 1

Re: M10:Q23 - DS   [#permalink] 17 Jun 2013, 10:23

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M10:Q23 - DS

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