1.

An alloy of tin and copper consists of 15 parts of tin and 105 parts of copper. Find the percentage of copper in the alloy?

Answer»

Given details are,

Amount of tin in an alloy = 15 parts

Amount of copper in an alloy = 105 parts

So, total weight of alloy = 15 + 105 = 120 parts

Now, by calculating

Percentage of copper in alloy = (105/120) × 100

= 525/6

= 87.50%

∴ Percentage of copper in an alloy is 87.50%



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