Question

an alloy consists of 13 part of copper to 7 part of zinc and 5 part of nickel. what is a percentage composition of the alloy ?

Answer 1

An alloy consists of 13 parts of copper to 7 parts of zinc & 5 parts of nickels.What is the percentage composition of the alloy?


In the alloy :

Number of parts of copper = 13

Number of parts of zinc = 7

Number of parts of nickel = 5

∴ Total parts of alloy = 13 + 7 + 5 = 25

∴ Percentage composition of Copper =Number of parts of copper /Total parts of alloy = (13/25)×100%= 52 %

Percentage composition of zinc =Number of parts of Zinc /Total parts of alloy = (7/25)×100%= 28 %

 

Similarly, percentage composition of nickel =
Number of parts of Nickel /Total parts of alloy = (5/25)×100% = 20%

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