Present Value Computation
Pete Frost made a deposit into his savings account 3 years ago, and
earned interest at an annual rate of 8%. The deposit accumulated to
$21,000. How much was initially deposited assuming that the
interest was compounded (a) annually, (b) semiannually, and (c)
quarterly?
Use Excel or a financial calculator for computation. Round
your answer to nearest dollar.
(a) | Annually | Answer |
(b) | Semiannually | Answer |
(c) | Quarterly | Answer |
(a)-The amount deposited if the interest was compounded annually
Present Value = Future Value / (1 + r)n
= $21,000 / (1 + 0.04)3
= $21,000 / (1.08) 3
= $21,000 / 1.259712
= $16,670.48
(b)-The amount deposited if the interest was compounded semi-annually
Present Value = Future Value / (1 + r)n
= $21,000 / [1 + (0.08/2)]3x2
= $21,000 / (1.04)6
= $21,000 / 1.265319018
= $16,596.61
(c)-The amount deposited if the interest was compounded quarterly
Present Value = Future Value / (1 + r)n
= $21,000 / [1 + (0.08/4)]3x4
= $21,000 / (1.02)12
= $21,000 / 1.268241795
= $16,558.36
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