In season one of the US Kitchen Nightmares, Gordan Ramsay tried to save 10 different restaurants. How many ended up closing afterwards?

In season one of the US Kitchen Nightmares, Gordon Ramsay attempted to rescue 10 different restaurants. Unfortunately, 9 out of the 10 restaurants ended up closing after his intervention. Despite his efforts to improve their operations, menus, and overall management, the challenges and issues faced by these establishments proved to be insurmountable, ultimately leading to their closure.