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If the ratio of the price of 1 kilogram Camembert cheese to

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Manager
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If the ratio of the price of 1 kilogram Camembert cheese to [#permalink] New post 16 Sep 2012, 03:30
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B
C
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E

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  35% (medium)

Question Stats:

68% (02:15) correct 32% (01:02) wrong based on 77 sessions
If the ratio of the price of 1 kilogram Camembert cheese to the price of 1 kilogram Brie cheese is 5:8, then the price of a kilogram of Toma cheese is how much higher (in dollars) than the price of a kilogram of Camembert cheese?
(1) The price of 1 kilogram of Brie cheese is 25% higher than the price of 1 kilogram of Toma cheese.
(2) The price of 1 kilogram of Toma cheese is 28% higher than the price of 1 kilogram of Camembert cheese.
[Reveal] Spoiler: OA
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Re: If the ratio of the price of 1 kilogram Camembert cheese to [#permalink] New post 16 Sep 2012, 04:36
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navigator123 wrote:
If the ratio of the price of 1 kilogram Camembert cheese to the price of 1 kilogram Brie cheese is 5:8, then the price of a kilogram of Toma cheese is how much higher (in dollars) than the price of a kilogram of Camembert cheese?
(1) The price of 1 kilogram of Brie cheese is 25% higher than the price of 1 kilogram of Toma cheese.
(2) The price of 1 kilogram of Toma cheese is 28% higher than the price of 1 kilogram of Camembert cheese.


Let C, B, and T be the prices per kilogram of each type of cheese.

Then \frac{C}{B}=\frac{5}{8}, or B=1.6C.
The question is "what is T-C?"

(1) B=1.25T or 1.6C=1.25T; we can express T in terms of C, but we still don't have the value of C.
Not sufficient.

(2) T=1.28C. Again, we don't have the value of C.
Not sufficient.

(1) and (2) together: Not sufficient, as we can deduce only the ratios between the prices of the three types of cheese, we don't any specific value.

Answer E

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Re: If the ratio of the price of 1 kilogram Camembert cheese to [#permalink] New post 16 Sep 2012, 09:30
navigator123 wrote:
If the ratio of the price of 1 kilogram Camembert cheese to the price of 1 kilogram Brie cheese is 5:8, then the price of a kilogram of Toma cheese is how much higher (in dollars) than the price of a kilogram of Camembert cheese?
(1) The price of 1 kilogram of Brie cheese is 25% higher than the price of 1 kilogram of Toma cheese.
(2) The price of 1 kilogram of Toma cheese is 28% higher than the price of 1 kilogram of Camembert cheese.



You do not even have to solve the other two statements
Just make sure you read the words (in dollars) as that is crucial, as the price of none of the three types of cheese is given we cant solve it.

Had it been find the ratio then we could have done it.
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Re: If the ratio of the price of 1 kilogram Camembert cheese to [#permalink] New post 06 Oct 2012, 21:12
Is this a 700 level question?
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Re: If the ratio of the price of 1 kilogram Camembert cheese to [#permalink] New post 07 Oct 2012, 20:52
Expert's post
navigator123 wrote:
If the ratio of the price of 1 kilogram Camembert cheese to the price of 1 kilogram Brie cheese is 5:8, then the price of a kilogram of Toma cheese is how much higher (in dollars) than the price of a kilogram of Camembert cheese?
(1) The price of 1 kilogram of Brie cheese is 25% higher than the price of 1 kilogram of Toma cheese.
(2) The price of 1 kilogram of Toma cheese is 28% higher than the price of 1 kilogram of Camembert cheese.


Yes, manyrhtdm is correct. You don't need to perform any calculations whatsoever here.

The question stem gives you the ratio of cost which is 5:8 (Camembert: Brie). It does not tell you the actual cost i.e. cost of Camembert could be $2.5/kg or $5/kg or $10/kg etc

The question asks you to find how much higher the price of Toma is as compared with Camembert price. You need to find the difference between the actual prices.

Both the statements only give you prices in percentages. So nowhere are you given data on actual prices. Hence, you straightaway mark (E).

And no, it is not a 700 level question. More like 550 I would say.

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Re: If the ratio of the price of 1 kilogram Camembert cheese to   [#permalink] 07 Oct 2012, 20:52
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