Problema Solution
A coin contains 1.251.251, point, 25 grams of nickel and 3.753.753, point, 75 grams of copper, for a total weight of 555 grams.
What percentage of the metal in the coin is copper?
Answer provided by our tutors
We will give solution the following question:
"A coin contains 25 grams of nickel and 75 grams of copper, for a total weight of 555 grams.
What percentage of the metal in the coin is copper?"
Since nickle and copper are metals the total weight of metal in the coin is: 27 + 75 = 100 g
The percentage of the metal in the coin is: (100/555)*100 = 18.018 %