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3 years ago

7

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:

larisa86 [58]3 years ago

5 0

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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