Independent solution

How to solve this Annuities and Perpetuities question

Setup

Setup

Fund J loses 1,000 of principal each year, so its annual interest withdrawals decline by 65.

A=1000s200.0825+65(Ds)200.0825A=1000s_{\overline{20}|\,0.0825}+65(Ds)_{\overline{20}|\,0.0825}

Model

Model

Each transfer to Fund K consists of the level 1,000 principal withdrawal plus the arithmetic decreasing interest component.

s20=47.0491s_{\overline{20}|}=47.0491

Compute

Compute

Accumulating the level and decreasing sequences at 8.25% gives a total of 86,902.

A=47049.1+6520(1.0825)2047.04910.0825A=47049.1+65\frac{20(1.0825)^{20}-47.0491}{0.0825}

Answer

Answer

The year-20 value of Fund K is 86,902, corresponding to choice D.

A=86902(D)\boxed{A=86902\quad\text{(D)}}