Question

A compound is made up of various elements totaling 60 ounces. If the total amount of copper in thecompound weighs 16 ounces, what percent of the compound is made up of copper? If necessary, round youranswer to the nearest hundredth of a percent.

Answer 1

To answer this question we are going to use the rule of three. We know that 60 ounces represents the 100% of the compound and we want to know what percent of the compound is made of copper which is 16 ounces in total, then the rule of three is:

$\begin{gathered} 60\rightarrow100 \\ 16\rightarrow x \end{gathered}$

Hence:

$\begin{gathered} x=\frac{16}{60}\cdot100 \\ x=26.67 \end{gathered}$

Therefore the copper represents 26.67% of the compound.