Final answer:
Mr. J will receive 608 calories from his protein intake of 152g per day (as protein provides 4 calories per gram). If his total calorie intake is 3042 kcal, assuming a lower end of 20% of total calories from fat, he should receive 608 kcal as fat, making the correct answer (b) 912 kcal, 608 kcal.
Step-by-step explanation:
To determine the amount of calories Mr. J will receive from his protein intake, we multiply his protein intake by the amount of calories provided by one gram of protein. Protein provides approximately 4 calories per gram. Hence, if Mr. J's protein intake is 152g per day:
152g of protein/day x 4 calories/g of protein = 608 calories from protein per day.
To find out the amount of kcal Mr. J should receive as fat, we first calculate the remaining calories after subtracting the calories from protein:
Total kcal - kcal from protein = kcal for fat and carbohydrates.
3042 kcal total - 608 kcal from protein = 2434 kcal for fat and carbohydrates.
Since there are no specifics given for carbohydrate intake, we'll focus on the fat calories. Fat provides approximately 9 calories per gram, therefore we can calculate the amount of fat in grams but for a balanced diet, it is typical to aim for around 20-35% of total calories from fat.
If we take the lower end of 20%, the calculation would be:
20% of 3042 kcal = 608 kcal from fat.
Hence, if we strictly consider the calories from fat within the context given, and based on the choices provided, the correct answer would be: (b) 912 kcal, 608 kcal.