Answer: 19.44%
Explanation:
Given : Landon is planning to make muffins from a mix.
The package says each muffins will be 180 calories and 35 of those calories will be from fat.
i.e. Total calories = 180
Calories from fat = 35
Now, the percent of the total calories is from fat is given by :-

Hence, the percent of the total calories is from fat= 19.44%