Final answer:
The daily carbohydrate requirement for a diet of 2,500 calories is approximately 375 grams. Joe consumed half of this, which is 187.5 grams, so he has another 187.5 grams of carbohydrates remaining for the day.
Step-by-step explanation:
Considering that the Percent Daily Values are based on a 2,000 calorie diet, and the standard carbohydrate requirement for this diet is 300 grams of carbohydrates per day, we can extrapolate this to a 2,500 calorie diet. If we assume the same proportion, a 25% increase in calorie intake (from 2,000 to 2,500 calories) corresponds to a 25% increase in the carbohydrate requirement. Hence, for a 2,500 calorie diet, the daily required intake of carbohydrates would be 375 grams (300g + 25% of 300g).
Since Joe consumed half of the carbohydrate allowance for a 2,500 calorie diet, he consumed approximately 187.5 grams (half of 375 grams). Therefore, the amount of carbohydrates Joe has remaining for the day is the other half, which is also 187.5 grams.