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In a certain chemical, the ratio of zinc to copper is 4 to 19. A jar of the chemical contains 646 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 19. A jar of the chemical contains 646 grams of copper. How many grams of zinc does it contain?

User Rishabhmhjn
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Chemical and enlargement of reduction in okay 12
User Suzi Larsen
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