francesca1234 francesca1234
  • 11-01-2021
  • Mathematics
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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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shaila1307
shaila1307 shaila1307
  • 11-01-2021
Chemical and enlargement of reduction in okay 12
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