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Gert invests all of her money at the end of 2000. At the end of each year, she checks the value of her investment. At the end of what year will she first find she's doubled her money in each of the following cases.

a. Gert invests all of her money at 5% simple interest

b. Gert invests all of her money at 5% simple interest, compounded annually

c. Gert invests all of her money at 5% simple interest, compunded twice a year

d. Gert invests all of her money at 5% simple interest, compunded monthly

 Aug 4, 2020
 #1
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a   .05 x   =  1                    x is the years to double

b    (1.05)x =2                    x is the years to double

c     (1+ .05/2)2x = 2          x is the years to double

d     (1 + .05/12)12x = 2     x is the years to double

 Aug 4, 2020

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