Santiago Coleman
07/07/2024 · Primary School
An investment company pays \( 8 \% \) compounded semiannually You want to have \( \$ 15,000 \) in the future (A) How much should you deposit now to have that amount 5 years from now? \( \$ 10,133.46 \) (Round to the nearest cent) B) How much should you deposit now to have that amount 10 years from now? (Round to the nearest cent)
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Tutor-Verified Answer
Step-by-step Solution
To determine how much you should deposit now to have \( \$ 15,000 \) in the future with an interest rate of \( 8\% \) compounded semiannually, we can use the formula for the present value of a future sum:
\[
PV = \frac{FV}{(1 + r/n)^{nt}}
\]
Where:
- \( PV \) = present value (the amount to deposit now)
- \( FV \) = future value (the amount you want in the future, which is \( \$ 15,000 \))
- \( r \) = annual interest rate (as a decimal, so \( 0.08 \))
- \( n \) = number of times interest is compounded per year (for semiannual compounding, \( n = 2 \))
- \( t \) = number of years until the future value is reached
### Part A: 5 Years from Now
1. **Identify the variables:**
- \( FV = 15000 \)
- \( r = 0.08 \)
- \( n = 2 \)
- \( t = 5 \)
2. **Plug the values into the formula:**
\[
PV = \frac{15000}{(1 + 0.08/2)^{2 \times 5}}
\]
\[
PV = \frac{15000}{(1 + 0.04)^{10}}
\]
\[
PV = \frac{15000}{(1.04)^{10}}
\]
3. **Calculate \( (1.04)^{10} \):**
\[
(1.04)^{10} \approx 1.48024
\]
4. **Calculate \( PV \):**
\[
PV = \frac{15000}{1.48024} \approx 10133.46
\]
So, the amount to deposit now for 5 years is approximately \( \$ 10,133.46 \).
### Part B: 10 Years from Now
1. **Identify the variables:**
- \( FV = 15000 \)
- \( r = 0.08 \)
- \( n = 2 \)
- \( t = 10 \)
2. **Plug the values into the formula:**
\[
PV = \frac{15000}{(1 + 0.08/2)^{2 \times 10}}
\]
\[
PV = \frac{15000}{(1 + 0.04)^{20}}
\]
\[
PV = \frac{15000}{(1.04)^{20}}
\]
3. **Calculate \( (1.04)^{20} \):**
\[
(1.04)^{20} \approx 2.20840
\]
4. **Calculate \( PV \):**
\[
PV = \frac{15000}{2.20840} \approx 6781.46
\]
So, the amount to deposit now for 10 years is approximately \( \$ 6,781.46 \).
### Summary:
- **A)** \( \$ 10,133.46 \)
- **B)** \( \$ 6,781.46 \)
Quick Answer
(A) \( \$ 10,133.46 \)
(B) \( \$ 6,781.46 \)
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