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 coi

Question

3 years ago

10

ns is copper

2 answers:

allsm [11] · Answer 1 · 2022-09-01T16:13:45+03:00

allsm [11]3 years ago

8 0

64% of the coin is copper metal.

oksian1 [2.3K] · Answer 2 · 2022-09-01T17:37:36+03:00

Answer: 64%

Step-by-step 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 :-

$\dfrac{\text{Copper in a coin}}{\text{Total weight of a coin}}\times100\\\\=\dfrac{16}{25}\times100\\\\=64\%$

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