1. **State the problem:**
A debtor owes RM5,000 due in 2 years and RM15,000 due in 5 years. They want to pay off both debts with two equal payments: one at the end of year 1 and another at the end of year 3. The interest rate is 4% compounded monthly. We need to find the amount of each payment.
2. **Formula and important rules:**
The monthly interest rate is $i = \frac{4\%}{12} = 0.0033333$ per month.
The present value (PV) of a future payment $F$ due in $n$ months is:
$$PV = \frac{F}{(1+i)^n}$$
We will discount all debts and payments to a common time (e.g., time 0) to equate their present values.
3. **Convert years to months:**
- Debt 1: 2 years = 24 months
- Debt 2: 5 years = 60 months
- Payment 1: 1 year = 12 months
- Payment 2: 3 years = 36 months
4. **Calculate present value of debts at time 0:**
- Debt 1 PV: $$\frac{5000}{(1+0.0033333)^{24}}$$
- Debt 2 PV: $$\frac{15000}{(1+0.0033333)^{60}}$$
Calculate each:
$$PV_1 = \frac{5000}{(1.0033333)^{24}} = \frac{5000}{1.083} \approx 4617.58$$
$$PV_2 = \frac{15000}{(1.0033333)^{60}} = \frac{15000}{1.2214} \approx 12275.44$$
Total PV of debts:
$$4617.58 + 12275.44 = 16893.02$$
5. **Calculate present value of payments at time 0:**
Let each payment be $P$.
Payment 1 at 12 months:
$$PV_{P1} = \frac{P}{(1.0033333)^{12}} = \frac{P}{1.041}$$
Payment 2 at 36 months:
$$PV_{P2} = \frac{P}{(1.0033333)^{36}} = \frac{P}{1.1275}$$
Total PV of payments:
$$PV_{payments} = \frac{P}{1.041} + \frac{P}{1.1275} = P\left(\frac{1}{1.041} + \frac{1}{1.1275}\right) = P(0.9606 + 0.8865) = 1.8471P$$
6. **Equate total PV of debts and payments:**
$$16893.02 = 1.8471P$$
7. **Solve for $P$:**
$$P = \frac{16893.02}{1.8471} \approx 9143.44$$
**Final answer:**
Each payment should be approximately RM9143.44 to settle the debts under the given conditions.
Debt Equal Payments 26B1C2
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