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?
1 answer:
Answer:
176 grams of zinc.
Step-by-step explanation:
4/9 = x/396 where x = the number of grams of zinc.
Cross multiply:
9x = 4*396
x = 4*396/9
x = 176 grams.
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