An alloy consist of 30% zinc, 45% nickel and the rest copper . find the mass of copper in 400g of alloy?
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Percentage of copper:
100 - 30 - 45 = 25%
.
Mass of copper in 400g of alloy:
25% x 400g = 0.25 x 400 = 100g
.
Answer: There are 100g of copper in 400 g of alloy.
Answered by
1
mass%of copper=100-(30+45) =25%
therefore mass of copper =25%of400g
=100g
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