Based on the amount Ken deposited, the period of compounding, and the interest, the interest earned would be $10.20.
This can be found as:
= Amount x (1 + rate) ^ number of periods
= 200 x (1 + 1%)⁵
= $210.20
= Balance after 5 years - Amount invested
= 210.20 - 200
= $10.20
In conclusion, the interest was $10.20
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