Question

A store has a $43.89 item on sale. The total discount of the sale is $9.66. What is the sale percentage off on this item?

Answer 1

well, if we take 43.89 to be the 100%, what is 9.66 off of it in percentage?


`\bf \begin{array}{ccllll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 43.89&100\\ 9.66&x \end{array}\implies \cfrac{43.89}{9.66}=\cfrac{100}{x}`

solve for "x".