Loan Settlement Time
1. **State the problem:**
Lush Gardens Co. bought a truck for 50000. It paid 5000 as a down payment, so the financed amount is $50000 - 5000 = 45000$.
2. **Identify the loan details:**
- Principal $P = 45000$
- Interest rate $r = 5.53\%$ compounded semi-annually
- Monthly payment $PMT = 1500$
- We want to find the time $t$ (in years and months) to pay off the loan.
3. **Convert the interest rate to an effective monthly rate:**
Since interest is compounded semi-annually, the nominal annual rate is 5.53%, compounded twice a year.
The semi-annual interest rate is $\frac{5.53}{2} = 2.765\% = 0.02765$ per half year.
The effective monthly interest rate $i$ is:
$$i = \left(1 + 0.02765\right)^{\frac{1}{6}} - 1$$
Calculate:
$$i = (1.02765)^{0.1667} - 1 \approx 0.00454$$
4. **Use the amortization formula to find the number of months $n$:**
The formula for the present value of an annuity is:
$$P = PMT \times \frac{1 - (1 + i)^{-n}}{i}$$
Rearranged to solve for $n$:
$$1 - (1 + i)^{-n} = \frac{P \times i}{PMT}$$
$$ (1 + i)^{-n} = 1 - \frac{P \times i}{PMT}$$
$$ -n \ln(1 + i) = \ln\left(1 - \frac{P \times i}{PMT}\right)$$
$$ n = -\frac{\ln\left(1 - \frac{P \times i}{PMT}\right)}{\ln(1 + i)}$$
5. **Plug in the values:**
$$1 - \frac{45000 \times 0.00454}{1500} = 1 - \frac{204.3}{1500} = 1 - 0.1362 = 0.8638$$
Calculate logarithms:
$$n = -\frac{\ln(0.8638)}{\ln(1.00454)} = -\frac{-0.146}{0.00453} \approx 32.2 \text{ months}$$
6. **Convert months to years and months:**
$$32.2 \text{ months} = 2 \text{ years and } 8.2 \text{ months}$$
Round up to the next payment period:
$$2 \text{ years and } 9 \text{ months}$$
**Final answer:** It will take approximately **2 years and 9 months** to settle the loan.