Answer:
£750
Explanation:
The interest Kay will have to pay can be calculated using the simple interest formula:
interest = principal x rate x time
where the principal is the amount borrowed, the rate is the annual interest rate, and the time is the duration of the loan in years.
In this case, the principal is £5,000, the rate is 15% per year, and the time is 1 year. Substituting these values into the formula, we get:
interest = 5000 x 0.15 x 1 = £750
Therefore, Kay will have to pay £750 in interest over the course of the one-year loan.