Word problem: Mixing Donuts
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A donut shop sells two kinds of donuts. Gourmet donuts sell for $4.15/dozen and regular donuts sell for $3.30/dozen. How many dozen of gourmet donuts must be mixed with 6 dozen of regular donuts to get a mixture that cost $3.90/dozen. I would need to round the answer to the tenths place since I couldn't buy a partial dozen. Please explain
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Detailed explanation in a PDF on determining how many dozen must be mixed in to get a mixture that cost $3.90/dozen.
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