Independent solution

How to solve this Terminal Value with Separately Reinvested Interest question

Setup

Setup

Because interest is available for separate reinvestment, the original fund retains only deposited principal.

P5=5(1,000)=5,000P_5=5(1{,}000)=5{,}000

Model

Model

At year t, the t active deposits produce 50t of interest.

I5=t=1550t(1.04)5tI_5=\sum_{t=1}^{5}50t(1.04)^{5-t}

Compute

Compute

Evaluate the side account and combine it with principal.

I5=791.2193I_5=791.2193
F5=5,000+791.2193=5,791.2193F_5=5{,}000+791.2193=5{,}791.2193

Answer

Answer

The accumulated value rounds to 5791, choice E.

F55,791(E)\boxed{F_5\approx5{,}791\quad\text{(E)}}