Question

1) An alloy consists of 45% nickel, 30% zinc and the remaining is copper. Find the percentage of
Copper in the alloy.
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Answer 1

Answer:

25%

Step-by-step explanation:

% of nickel = 45%

% of zinc = 30%

Total % of alloy = 100%

Hence, % of copper in it = 100 - (45 + 30) %

= 100 - 75 %

= 25%

Answer 2

Answer:

25%

Step-by-step explanation:

% of nickel = 45%

% of zinc = 30%

Total% of alloy = 100%

% of copper = 100 - (45 + 30)%

= (100 - 75)%

= 25%

Hence, the% of copper in the alloy = 25%