Question

A coin contains 1.25 grams of nickel and 3.75 grams of copper, for a total weight of 5 grams what percentage of the metal in coin is copper

Answer 1

3.75/5 = .75
.75 X 100 = 75
75% is the answer

Answer 2

3.75/5 = .75 or 75% so 75% of the coin is copper