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Statement of a problem № 2617

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The mass of a liter of milk is 1.032 kg. The butterfat that it contains has a density of 865 kg/m3 when pure, and it constitutes exactly 4 percent of the milk by volume. What is the density of the fat-free skimmed milk?

Solution:
The mass of a liter of milk is 1.032 kg. The butterfat that it contains has a de

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