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# If a price of an article costing \$8 will be reduced to \$x

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Manager
Joined: 09 Feb 2003
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If a price of an article costing \$8 will be reduced to \$x [#permalink]

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18 Nov 2003, 13:25
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Hi,
A certain store has decided that it will reduce all prices based on a formula. If a price of an article costing \$8 will be reduced to \$x, what is the original price of an article whose price will be reduced to \$3
1.x =6
2.The formula is: the reduced price equals the original price minus two.

The official answer is : A
Based on (1) we can make different assumptions .e.g the reduced price equals the original price minus two OR the discount percentage is 25%. Based o the former , we get 5 as the original price and based on the latter we get 4. In short (1) is not sufficient and thus A is not right. Just wondering what you guys think?
Sarnia

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Manager
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18 Nov 2003, 13:30
Interesting question. I agree with you, sarnia.

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Director
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18 Nov 2003, 13:40
agree with you, sarnia.

is this from GMAT...? must not be, or the guy who wrote and gave the solution was

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Intern
Joined: 20 Oct 2003
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20 Nov 2003, 08:58
Yup, the question is either self-made or abnormal.....
Alex.

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Intern
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20 Nov 2003, 11:10
yeah....u're right sarnia. I think the answer should be C.

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Intern
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22 Nov 2003, 06:42
Hi guys!!!
Where r we going..
the answer should be D..
both the statements give the answer to us!!!!

Gaurav.

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GMAT Instructor
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Schools: Haas, MFE; Anderson, MBA; USC, MSEE

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22 Nov 2003, 22:58
sarnia wrote:
Hi,
A certain store has decided that it will reduce all prices based on a formula. If a price of an article costing \$8 will be reduced to \$x, what is the original price of an article whose price will be reduced to \$3
1.x =6
2.The formula is: the reduced price equals the original price minus two.

The official answer is : A
Based on (1) we can make different assumptions .e.g the reduced price equals the original price minus two OR the discount percentage is 25%. Based o the former , we get 5 as the original price and based on the latter we get 4. In short (1) is not sufficient and thus A is not right. Just wondering what you guys think?
Sarnia

No, everybody. The answer here is B.

In 1) the formula could be anything that maps 8 to 6. Hence we have no idea what number maps to 3. (e.g. formula could be subtract 2 or could be multiply by 3/4).

In 2) the formula is given explicitly, hence 5 is the only number that can map to 3.

_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

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Re: DS-Formula   [#permalink] 22 Nov 2003, 22:58
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# If a price of an article costing \$8 will be reduced to \$x

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