An metallic alloy contains 20g copper, 20g tin and 40g silver.Then find out the percentage of tin in the alloy?

An metallic alloy contains 20g copper, 20g tin and 40g silver.Then fin

1.	An metallic alloy contains 20g copper, 20g tin and 40g silver.Then find out the percentage of tin in the alloy?
A.	20%
B.	30%
C.	25%
D.	40%
Answer» D. 40%

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An metallic alloy contains 20g copper, 20g tin and 40g silver.Then find out the percentage of tin in the alloy?

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