#### Explanation:

Let the original price be $x$

Then 55% of $x$ =$29.99 color(green)(55/100x=$29.99)

Multiply both sides by $\textcolor{red}{\frac{100}{55}}$

color(green)(55/100xcolor(red)(xx100/55)=$29.99color(red)(xx100/55)) color(green)(55/(color(red)(55))xx(color(red)(100))/100xx x=$54.5272... 

color(green)(color(white)(.)1color(white)(.)xxcolor(white)(..)1color(white)(.)xxx=$54.5272... ) Original price was $54.53# to 2 decimal places