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Let \(P, R\) and \(C\) be the profit, the sales price (revenue) and the cost price of the product, respectively.

Then \(P = R – C.\)

Since \(P\) is \(20\)percent of the sales price, the IVY method tells us that \(P = 20*(\frac{1}{100})*R.\)

So,\(P = (\frac{1}{5})R\) or\(R = 5P.\)

Plugging this into \(P = R – C\) yields \(P = 5P – C\) or \(C = 4P.\)

It follows that \(P = (\frac{1}{4})C\), and \(P\) is \(25\) percent of \(C\).

Therefore, B is the answer.

Answer B

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