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Umnica [9.8K]
3 years ago
7

A coin contains 9 grams of nickel and 16 grams of copper, for a total weight of 25 grams. What percentage of the metal in the co

in is copper?
Mathematics
2 answers:
Fynjy0 [20]3 years ago
7 0

Answer:

64% of the metal in the coin is copper.

Step-by-step explanation:

A coin contains nickel = 9 grams

and copper = 16 grams.

Total weight of the coin = 16 + 9 = 25 grams

Now we have to calculate the percentage of copper in the coin.

Therefore, \frac{16}{25} × 100

                = 0.64 × 100

                = 64%

Hence 64% of the metal in the coin is copper.

Sonbull [250]3 years ago
3 0
To find the percentage, we take the amount of copper and divide it by the total weight. In this case, there are 16 grams of copper. 

16/25 is 0.64.

The answer is 64 percent.
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