Problema Solution

Pure tin was mixed with a 4% tin alloy to produce an alloy that was 16% tin. How much pure tin and how much 4% alloy were used to produce 32kg of 16% alloy?

Answer provided by our tutors

let


x = kg of pure 100% tin


y = kg of 4% tin


x + y = 32


1.00*x + 0.04y = 0.16*32


by solving the above system of equations we find:


x = 4 kg


y = 28 kg


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4 kg of pure tin and 28 kg of 4% tin alloy were used to produce the 16% alloy.