7.2k views
3 votes
Find the future values of these ordinary annuities. Compounding occurs once a year. Do not round intermediate calculations. Round your answers to the nearest cent.

(a) $500 per year for 6 years at 8%.
(b) $250 per year for 3 years at 4%.
(c) $1,000 per year for 2 years at 0%.
(d) Rework parts a, b, and c assuming they are annuities due.
(i) Future value of $500 per year for 6 years at 8%: $
(ii) Future value of $250 per year for 3 years at 4%: $
(iii) Future value of $1,000 per year for 2 years at 0%: $

User MadNeox
by
8.4k points

1 Answer

6 votes

Final answer:

The future value of ordinary annuities and annuities due are calculated using specific formulas. For ordinary annuities, the payment per period is multiplied by a factor based on the interest rate and the number of periods. When reworking for annuities due, the ordinary annuity is calculated first and then adjusted for the extra compounding.

Step-by-step explanation:

To find the future value of these annuities, we use the future value formula for an annuity: FV = Pmt * [((1 + r)^n - 1) / r], where FV is the future value, Pmt is the payment per period, r is the interest rate per period, and n is the number of periods.

Ordinary Annuities:

Future value of $500 per year for 6 years at 8%: FV = $500 * [((1 + 0.08)^6 - 1) / 0.08] = $500 * [((1.08)^6 - 1) / 0.08]

Future value of $250 per year for 3 years at 4%: FV = $250 * [((1 + 0.04)^3 - 1) / 0.04] = $250 * [((1.04)^3 - 1) / 0.04]

Future value of $1,000 per year for 2 years at 0%: FV = $1,000 * 2 (since there's no interest, it's just the sum of the payments)

Annuities Due:

Future value of $500 per year for 6 years at 8% as an annuity due: We calculate the ordinary annuity as before and multiply by (1 + r) to account for the extra period of compounding

Future value of $250 per year for 3 years at 4% as an annuity due: Follow the same process as before

Future value of $1,000 per year for 2 years at 0% as an annuity due: Takes the sum and adds the extra year's payment upfront

Note: Precise numerical solutions are not provided here as the calculations for the annuity due involve using the previously calculated ordinary annuity values, and then adjusting for the extra compounding period.

User Carsten Greiner
by
7.9k points