Question

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

Answer 1

The percentage of Copper:

$13 \div 25\times 100 = 52\%$

The percentage of zinc :

$7 \div 25 \times 100 = 28\%$

The percentage of nickel :

$5 \div 25 \times 100 = 20\%$

Answer 2

Answer:

Copper=52%, Zn=28%, Ni=20%

Step-by-step explanation:

Total parts = 13+7+5=25

percentage of Cu=13/25multiply 100=52%

percentage of Zn=7/25multiply 100=28%

percentage of Ni=5/25multiply 100=20%