Question

An alloy consists of 15 parts copper, 8 parts of zinc and 7 parts of nickel. What percent of the alloy is copper? ​

Answer 1

Step-by-step explanation:

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An alloy consists of 15 parts copper, 8 parts of zinc and 7 parts of nickel. What percent of the alloy is copper?

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Here the sum of all parts =13+7+5=25

$Percentage \: of \: copper = \frac{13}{25} ×100=52%$

$Percentage \: of \: zinc = \frac{7}{25} ×100=28%$

$Percentage \: of \: nickel = \frac{5}{25} ×100=20%</p><p></p><p>$

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Answer 2

Answer:

Here the sum of all parts = 15+8+7 = 30

Percentage of copper = (15/30) × 100

= 50 %

Percentage of zinc = (8/30) × 100

= 26.6 %

Percentage of nickel = (7/30) × 100

= 23.3 %