Answer: 19.5 calories per ounce
Explanation:
Given: The calorie density D in calories per ounce of a food that contains C calories and weighs W ounces is given by the formula :-

If 12 oz of a particular beverage contains 234 calories
Then the calorie density of the beverage=
calories per ounce
Therefore, the calorie density of the beverage= 19.5 calories per ounce