Answer:
£25,353.01
Explanation:
You want to know the debt in 14 years if it is initially £800 and increases by 28% per year.
Compound interest
The amount with interest compounded is given by ...
A = P(1 +r)^t
where P is the principal borrowed, r is the annual interest rate, and t is the number of years.
Bryn will owe ...
A = 800·1.28^14 ≈ 25353.01
After 14 years Bryn will owe £25,353.01.
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