Question

13. An alloy consists of 13 parts of copper, 7 parts of zinc and 5 parts of nickel. What
the percentage of each metal in the alloy ?​

Answer 1

Answer:

Here sum of all part =25

percentage of copper=13/25×100=52 percent

percentage of zinc=7/25×100=28 percent

percentage of nickel =5/25×100=20 percent

IHope It Will Help You

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