Store A sells a 9.9 ounce bag of tortilla chips for $2.99 while Store B sells the same size bag for $4.59. Per ounce, by how much more does Store B sell their chips?
To find the cost per ounce at Store A, divide the total cost by the number of ounces: $2.99 / 9.9 ounces = $<<2.99/9.9=0.302020202020202>>0.30 per ounce
To find the cost per ounce at Store B, divide the total cost by the number of ounces: $4.59 / 9.9 ounces = $<<4.59/9.9=0.4646464646464647>>0.46 per ounce
Store B sells their chips for $0.46 per ounce while Store A sells their chips for $0.30 per ounce.
Store B sells their chips for $0.46 - $0.30 = $0.16 more per ounce. Answer: \boxed{0.16}.