Original practice · fully worked
Original variant: terminal value of a two-tier savings schedule
A saver deposits 8,000 at the beginning of each of four years. At the beginning of years 3 and 4, the saver adds an extra 2,000. The account earns 7% effective annually. Determine the balance at the end of year 8.
- A
48,920.18 - B
51,776.90 - C
53,412.26 - D
55,624.56 - E
58,115.44
Answer and calculation
At time 4 the four base deposits and two supplements total their accumulated due values. Four more years of growth produce 55624.56, choice D.
Setup
Setup
Accumulate the four base deposits and the final two supplemental deposits to time 4.
S4=8,000s¨4∣0.07+2,000s¨2∣0.07 Model
Model
Move the time-4 balance to time 8.
S8=S4(1.07)4 Compute
Compute
Evaluate both components on the same timeline.
S8=55,624.5621 Answer
Answer
The end-of-year-8 balance is 55624.56, choice D.
S8=55,624.56(D)