Question

an alloy consista of 13 parts of copper, 7parts of zinc and 5 parts of nickel. find the percentage of copper in the alloy

Answer 1

there is 52 percent of copper in alloy sum of parts=25 copper part =13 by 13/52*100 we get 52 I hope it helps you

Answer 2

Percentage of Copper = 52%

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