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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