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What is the answer to A basket with 12 apples has a mass of 3,105 grams. The same basket with 7 apples has a jhaad of 1980 grand each apple has the same mad what is the mess of the baskets?

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total mass = 12a + b = 3105
7a + b = 1980

5a = 1125
a = 225

b = 1980-7(225) = 405

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