An alloy is made up of 60% nickel, 7% iron and the rest with copper. F

1.	An alloy is made up of 60% nickel, 7% iron and the rest with copper. Find the weight of copper in a 200 g sample of the alloy.
Answer» Step-by-step explanation: Nickel = 60% IRON = 7% COPPER = ?? $\rightarrow$ 100% = 60% + 7% + Copper % $\rightarrow$ 100% = 67% + Copper % $\rightarrow$ Copper % = 100% - 67% $\rightarrow$ Copper % = 33 % Copper in alloy = 33% Copper amount = 33% of TOTAL alloy $\rightarrow$ 33% × 200 $\rightarrow$ 33/100 × 200 $\rightarrow$ 66 GRAMS. *Copper is 66 grams in the alloy.*

An alloy is made up of 60% nickel, 7% iron and the rest with copper. Find the weight of copper in a 200 g sample of the alloy.

Answer»

Step-by-step explanation:

Nickel = 60%

IRON = 7%

$\rightarrow$ 100% = 60% + 7% + Copper %

$\rightarrow$ 100% = 67% + Copper %

$\rightarrow$ Copper % = 100% - 67%

$\rightarrow$ Copper % = 33 %

Copper in alloy = 33%

Copper amount = 33% of TOTAL alloy

$\rightarrow$ 33% × 200

$\rightarrow$ 33/100 × 200

$\rightarrow$ 66 GRAMS.

Copper is 66 grams in the alloy.