The amount that will be in Heidi’s account after 15 years can be calculated using the formula for calculating the Future Value (FV) of an Ordinary Annuity as follows:
FV = M * (((1 + r)^n - 1) / r) ................................. (1)
Where;
FV = Future value of the amount = ?
M = total monthly contribution = Heidi’s monthly contribution of 11% of her monthly salary + Employer monthly contribution of 6% of Heidi’s monthly salary = (11% * Heidi’s monthly salary + 6.25% * Heidi’s monthly salary) = (11% * $3,250) + (6.25% * $3,250) = $552.50
r = Monthly interest rate = Annual interest rate of 401(k) / 12 = 6.25% / 12 = 0.0625 / 12 = 0.00520833333333333
n = number of months = Number of years * 12 = 15 * 12 = 180
Substituting all the values into equation (1), we have:
FV = $552.50 * (((1 + 0.00520833333333333)^180 - 1) / 0.00520833333333333)
FV = $552.50 * 297.097770863934
FV = $164,146.518402324
Rounding to the nearest cent, we have:
FV = $164,146.52
Therefore, the amount that will be in Heidi’s account after 15 years is A. $164,146.52.
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