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Dr. Zaius invests $10,000 in a CD with an annual interest rate of 4% that compounds semi-annually (twice a year). After six months, he rolls over the CD into another CD with an annual interest rate of 5% that also compounds semi-annually. After six months in the second CD, how much does Dr. Zaius have, in dollars?

 Feb 17, 2021
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interest for first 6 months   then moves to second 6 month interest

   10000 (1 + .02)        

    [ 10000 (1 + .02)] (1 + .025) = $..............            note that Doc only gets 1/2 of the annual interest  for each 6 month deposit

 Feb 17, 2021

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