Your grandmother is gifting you $150 a month for four years while you attend college to earn your bachelor's degree. At a 3.7 percent discount rate, what are these payments worth to you on the day you enter college?
Present Value of an Ordinary Annuity
Monthly Payment (P) = $150 per month
Monthly Interest Rate (r) = 0.308333% per month [3.70% / 12 Months]
Number of period (n) = 48 Months [4 Years x 12 Months]
Therefore, the Present Value of an Ordinary Annuity = P x [{1 - (1 / (1 + r) n} / r]
= $150 x [{1 - (1 / (1 + 0.00308333)48} / 0.00308333]
= $150 x [{1 - (1 / 1.159249)} / 0.00308333]
= $150 x [(1 - 0.862628) / 0.00308333]
= $150 x [0.137372 / 0.00308333]
= $150 x 44.553239
= $6,682.99
“Therefore, the present worth of the annuity payment will be $6,682.99”
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