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aniked [119]
3 years ago
9

While mining, Nancy found a Large metal bar that contain 12 g of copper. Nancy also determined that the bar was 80% copper. What

was the total weight of the metal bar in grams?
Mathematics
1 answer:
Snezhnost [94]3 years ago
5 0

Answer:

  15 grams

Step-by-step explanation:

If the copper made up 80% of the weight of the bar (w), then the bar weighed ...

  0.80w = 12 g

  w = (12 g)/0.80 = 15 g

_____

Copper has a density of about 8.96 g/cm³, so Nancy's "large" metal bar is about the size of two sugar cubes.

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