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Mathematics, 15.12.2020 16:00 cybilmariejensen

In a certain chemical, the ratio of zinc to copper is 4 to 9. A jar of the chemical contains 396 grams of copper. How many grams of zinc does it contain?

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In a certain chemical, the ratio of zinc to copper is 4 to 9. A jar of the chemical contains 396 gra...

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