Question

A coin contains 9 grams of nickel and 16 grams of Copper, for a total of 25 grams. What percentage of the metal is copper?

Answer 1

The copper percentage = 64%

Explanation:

Given

• Nickle quantity = 9 grams of nickel

• Copper quantity = 16 grams of nickel

• Total quantity = 25 grams

The percentage of copper metal can be determined using the formula

Copper percentage = [Copper quantity / Total quantity] × 100

= [16 / 25] × 100

= 0.64 × 100

= 64%

Therefore, the copper percentage = 64%