Independent solution

How to solve this Spot and Forward Rates question

Setup

Setup

Move all values to year 3: the initial investment grows at the 4% evaluation rate.

F0=4000(1.04)3F_0=4000(1.04)^3

Model

Model

The three 1,400 receipts have two, one, and zero years of reinvestment at i.

4000(1.04)3=1400[(1+i)2+(1+i)+1]4000(1.04)^3=1400\left[(1+i)^2+(1+i)+1\right]

Compute

Compute

The positive root of the quadratic is i = 6.968059%.

i=0.0696805863i=0.0696805863

Answer

Answer

The reinvestment rate is approximately 7.0%, selecting choice E.

i7.0%(E)\boxed{i\approx7.0\%\quad\text{(E)}}