Asked by Samantha

A chemist is studying the properties of a bronze alloy (mixture) of copper and tin. She begins with 6 kg of an alloy that is one sixth tin. Keeping the amount of copper constant, she adds small amounts of tin to the alloy. Letting x be the total amount of tin added, define

c(x) = concentration of tin = Total amount of tin / total amount of alloy

find the formula for c(x)
Answered by Steve
To start with, there is 1 kg of tin.
After adding x kg of tin, then we have

c(x) = (x+1)/(x+6)
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