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Stamps of two denominations

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Reference no: EM131102957

In January 2013, a country's first-class mail rates increased to 43cents for the first ounce, and 21 cents for each additional ounce. If Sabrina spent $17.94 for a total of 54 stamps of these two denominations, how many stamps of each denomination did she buy?

Reference no: EM131102957

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