Question

Audryn left a $12 tip on a $68.73 restaurant bill. What percent tip did she leave? Round to the nearest tenth of a percent.

Answer 1

If we take the 68.73 to be the 100%, then what is 12 in percentage of that?

since in this case, the tip seems to be a percent of the bill

so   $\bf \begin{array}{ccllll} amount&\%\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 68.73&100\\ 12&x \end{array}\implies \cfrac{68.73}{12}=\cfrac{100}{x}$

solve for "x"