Final answer:
To calculate the percentage of total calories in the ice cream that come from fat, divide the number of calories from fat by the total number of calories and multiply by 100. In this case, the ice cream has 310 kcal and 20 grams of fat, so the correct answer is 58% of kcal in this food are from fat.
Step-by-step explanation:
To calculate the percentage of total calories in the ice cream that come from fat, we need to divide the number of calories from fat by the total number of calories and then multiply by 100.
In this case, the ice cream has 310 kcal and 20 grams of fat. Since each gram of fat contains 9 calories, the total number of calories from fat is 20 grams * 9 calories/gram = 180 calories. Therefore, the percentage of calories from fat is (180 calories / 310 calories) * 100 = 58%.
So, the correct answer is (c) 58% of kcal in this food are from fat.