A coin contains 9 grams of nickel and 16 grand of copper for a total weight of 25 grams what if the percentages the metal in coins is copper

Question

asked Feb 28, 2018 27.4k views

2 Answers

Qbzenker · Answer 1 · 2018-03-06T15:42:57+0000

Answer: 64%

Explanation:

Given : A coin contains 9 grams of nickel and 16 grams of copper for a total weight of 25 grams .

i.e. Total weight of coin = 25 grams

weight of copper in a coin = 16 grams

Then , the percentages the metal in coins is copper is given by :-

$\frac{\text{Copper in a coin}}{\text{Total weight of a coin}}*100\\\\=(16)/(25)*100\\\\=64\%$

Hence, the percentages the metal in coins is copper = 64%