So a spouter believes a family of four can eat for less at a fast food restaurant. Let's say a kids meal is $3 and a combo is $5. The total would be $17.12 with tax. You can buy a pound of ground beef for $3.50, a bag of rolls for $2, a bag of fries for $3, and a 2 liter of soda for $2. Total: $10.50, although there may be a tax on the soda, making it $10.64. Additionally, the family would still be hungry after eating the fast food.