Solutions Manual, Chapter 8 11
Exercise 8-3 (30 minutes)
Annual savings in part–time help ……………………….
Added contribution margin from expanded sales
(1,000 dozen × $1.20 per dozen) ……………………
Annual cash inflows ………………………………………..
Investment required
Factor of the internal =
rate of return Annual cash inflow
$18,600
= = 3.720
$5,000
Looking in Exhibit 8B-2, a factor of 3.720 falls closest to the 16% rate of return.
3. The cash flows will not be even over the six-year life of the machine because of the extra $9,125
inflow in the sixth year. Therefore, the above approach cannot be used to compute the internal rate
of return in this situation. Using trial-and-error or some other method, the internal rate of is 22%:
Reduced part-time help …..
Added contribution margin
Salvage value of machine ..
Total cash flows (a) ……….
Discount factor (22%) (b) .
Present value (a)×(b) …….