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To solve this problem, we can break it down into two parts: Calculate the future value of the initial investment at 9 % p .

To solve this problem, we can break it down into two parts:
Calculate the future value of the initial investment at 9% p.a. compound interest for 5 years.
Calculate the future value of the remaining balance at 13% p.a. interest, compounded semi-annually for 4 years.
Part 1: Future Value of Initial Investment
We can use the formula for the future value of an ordinary annuity to calculate the future value of the annual investments at 9% p.a. compound interest for 5 years.
The formula for the future value of an ordinary annuity is:
FV = P *[(1+ r)^n -1]/ r
Where:
FV = Future Value
P = Annual payment
r = Interest rate per period
n = Number of periods
Using the given values:
P = R1000
r =9% p.a.=0.09
n =5 years
We can calculate the future value of the initial investment.
Part 2: Future Value of Remaining Balance
For the remaining balance, we can use the compound interest formula:
A = P(1+ r/n)^(nt)
Where:
A = the amount of money accumulated after n years, including interest.
P = the principal amount (initial amount of money).
r = annual interest rate (in decimal).
n = number of times that interest is compounded per year.
t = time the money is invested for in years.
Using the given values:
P = R984.71
r =13% p.a.=0.13
n =2(compounded semi-annually)
t =4 years
We can calculate the future value of the remaining balance.

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