Stephanie Watson is 20 years old and plans to make the following investments beginning next year. She will invest $3,125 in each of the next three years and will then make investments of $3,650, $3,725, $3,875, and $4,000 over the following four years. If the investments are expected to earn 11.5 percent annually, how much will Stephanie have when she turns 30?
Given
CF1 = 3125
CF2 = 3125
CF3 = 3125
CF4 = 3640
CF5 = 3725
CF6 = 3875
CF7 = 4000
Rate of return = r = 11.5% or 0.115
PV of the investments (at age 20) = CF1/(1+r) + CF2/(1+r)2 + CF3/(1+r)3 +.... + CF7/(1+r)7
= 3125/(1.0115) + 3125/(1.0115)2 + 3125/(1.0115)3 + 3640/(1.0115)4 + 3725/(1.0115)5 + 3875/(1.0115)6 + 4000/(1.0115)7
= $23469.09
Value of investment after n = 10 years i.e when Stephanie turns 30 = FV = PV(1+r)10 = 23469.09*1.11510 = $69701.95
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