Jessee buys his coworkers lunch the food cost 99$ and sales tax is 9% jessee wants to leave a tip of 20% based on pretax how much will the total be including tax and tip
The sales tax on the food cost is $99 * 0.09 = $<<99*0.09=8.91>>8.91.
So, the total cost including tax is $99 + $8.91 = $<<99+8.91=107.91>>107.91.
Then, the total amount with the tip is $107.91 * 0.20 = $<<107.91*0.20=21.58>>21.58.
So, the total cost will be $107.91 + $21.58 = $<<107.91+21.58=129.49>>129.49. Answer: \boxed{129.49}.