How is this 33.2 calculated?

Analyzing Sales Mix Data You are the GM of Red's Burgers. After monitoring 100 guests who ate at your restaurant you found the following results. What is the weighted average Food Cost \%? 33.2% What would be Red's Burgers Total Sales? $449.25 Analyzing Sales Mix Data You are the GM of Red's Burgers. After monitoring 100 guests who ate at your restaurant you found the following results. What is the weighted average Food Cost \%? 33.2% What would be Red's Burgers Total Sales? $449.25