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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?

Sagot :

Answer:

The copper percentage = 64%

Step-by-step 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%