Shankia like to buy coffee and breakfat andwiche at her favorite cafe. With her weekly allowance, he can either buy exactly 5 cup of coffee and 1 breakfat andwich, or he can buy exactly 1 cup of coffee and 3 breakfat andwiche. What percentage of her weekly allowance i the cot of a cup of coffee at her favorite cafe? Round your anwer to the nearet whole percent.