1Tuition costs for a student are expected to inflate at the
1.Tuition costs for a student are expected to inflate at the rate of 8 percent per year. To prepare enough money for the tuition costs for the next four years, a student plans to set up a savings account. The first year\'s tuition of $2,000 is due one year from now. Assuming that the savings account has an interest rate of 5%, the amount of money that the student needs to deposit in the savings account now is closest to:
2. Receipts from an investment will be $1,000 at the end of the first year and decline by $150 each year for 5 years thereafter. Assuming that the interest rate is 7%, the equivalent constant annual investment receipt amount is closest to:
Solution
(1)
Required present value ($) = 2,000 x P/A(5%, 4) = 2,000 x 3.5460** = 7,092
(2)
First, we compute Present Worth (PW) of investment as follows. Note that PV Factor in year N = (1.07)-N
Equivalent annual investment = PW / P/A(7%, 5) = $3,119.78 / 4.7665** = $654.22
**From P/A and P/F Factor tables
| Year | Investment ($) | PV Factor @7% | Discounted Investment ($) |
| (A) | (B) | (A) x (B) | |
| 1 | 1,000 | 0.9346 | 934.58 |
| 2 | 850 | 0.8734 | 742.42 |
| 3 | 700 | 0.8163 | 571.41 |
| 4 | 550 | 0.7629 | 419.59 |
| 5 | 400 | 0.7130 | 285.19 |
| 6 | 250 | 0.6663 | 166.59 |
| PW ($) = | 3,119.78 |
