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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?
Solution
copper = 13 parts, zinc - 7 parts Nickel = 5 Parts
Total alloy = 13 + 7 + 5 = 25 parts
Now, percentage of copper `= 13/25 xx 100 = 52%`
Percentage of zinc `=7/25 xx 100 = 28%`
and percentage of nickel `=5 /25 xx 100 = 20%`
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