Final answer:
To find the total number of interest days, multiply the interest rate by the duration of the debt.
Step-by-step explanation:
To calculate the number of days of interest Kate accumulated on her debt, we need to know the interest rate and the duration of the debt. Let's assume the interest rate is 1% per day and the debt lasted for 28 days. To find the total interest, we multiply the interest rate (1%) by the number of days (28):
Total interest = 1% * 28 = 0.01 * 28 = 0.28
Therefore, Kate accumulated interest for 28 days on her debt.