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Mathematics, 16.11.2020 21:40 itaheart101

David Invested €4,000 for 2 years. The rate of compound interest for the two years was 4% per annum.
Calculate the total interest David earned after 2 years.
(b)
At the end of the second year David invested an extra €1,000. At the end of the third year
the investment's value was €5,592.72Calculate the interest rate for the third year.

I only need the answer for b

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