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# doughnut

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VP
Joined: 18 May 2008
Posts: 1200

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07 Feb 2009, 04:02

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Manager
Joined: 04 Jan 2009
Posts: 234

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07 Feb 2009, 11:26
ritula wrote:

A just gives one eqn to solve for the prices of Donut and cupcake.
20D = 30C-1
B gives another eqn to solve for the prices:
D+C=0.7

A & B together can be used to solve for D & C.
Now,
6=xD+yC.

Still be left with two unknowns. So, both may be insufficient.
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tusharvk

Senior Manager
Joined: 30 Nov 2008
Posts: 482
Schools: Fuqua

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07 Feb 2009, 12:05
Agreed with tusharvk. IMO E
Manager
Joined: 15 Apr 2008
Posts: 159

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07 Feb 2009, 12:27
i think the answer should be D
there is one equation in the question stem.
SVP
Joined: 17 Jun 2008
Posts: 1502

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07 Feb 2009, 13:53
It should be E. Even after combining the statements, number is unknown.
Manager
Joined: 04 Jan 2009
Posts: 234

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07 Feb 2009, 15:22
ALD wrote:
i think the answer should be D
there is one equation in the question stem.

I am sorry. I do not understand. what would be the equation from the question stem?
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tusharvk

VP
Joined: 18 May 2008
Posts: 1200

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08 Feb 2009, 10:23
OA is E. I thought question stem says D+C=6. actually i mistook it as 6 dollars for 1 doughnut and 1 cake instead of 1 kind.

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: doughnut   [#permalink] 08 Feb 2009, 10:23
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# doughnut

Moderator: chetan2u

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