Question

3. An alloy consists of 13 parts of copper to 7 parts of zinc and 5 parts of nickel. What is the percent
composition of the alloy?
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Answer 1

Answer:

answer is 20%

Step-by-step explanation:

Answer. Total parts = 13 + 7 + 5 = 25 . Percentage composition of nickel = 5/25×100 = 20%

plzz mark as a brainlist answer.

Answer 2

Total Parts of Alloy = 13+7+5 => 25

% of Copper = $\sf{\dfrac{13}{25}\times 100 = 13\times4=52\%}$

% of Zinc = $\sf{\dfrac{7}{25}\times100=7\times4=28\%}$

% of Nickel = $\sf{\dfrac{5}{25}\times100=5\times4=20\%}$

Therefore, the total percent adds up to 100%.

So,

% of Copper = 52%

% of Zinc = 28%

% of Nickel = 20%

Hope it helps u

Have a great day ahead

Annyeong