4 months ago
Q:

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 coin is copper?

Accepted Solution

A:
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.