Final answer:
The size of the semi-annual deposits to redeem the promissory note is approximately $246.03.
Step-by-step explanation:
To calculate the size of the semi-annual deposits, we can use the formula for the present value of an annuity.
The formula is:
PV = PMT * ((1 - (1 + r)^(-n)) / r)
Where PV is the present value (the amount of the promissory note), PMT is the size of the semi-annual deposits, r is the interest rate per period (8% / 2 = 4% = 0.04), and n is the number of periods (12 years * 2 = 24).
Substituting the values into the formula, we have:
11,000 = PMT * ((1 - (1 + 0.04)^(-24)) / 0.04)
Solving for PMT gives us:
PMT ≈ $246.03
Therefore, the size of the semi-annual deposits is approximately $246.03.