Percy paid 24.10 for a basketball. The price of a basketball was 22.99. What was the sales tax rate?

so, he paid 24.10 with the tax included, without the tax is 22.99, thus 24.10 - 22.99 or 1.11 is the tax amount.

now, if we take 22.99 to be the 100%, how much is 1.11 off of it in percentage?

 [tex]\bf \begin{array}{ccll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 22.99&100\\ 1.11&p \end{array}\implies \cfrac{22.99}{1.11}=\cfrac{100}{p}\implies p=\cfrac{1.11\cdot 100}{22.99}[/tex]