In: Finance
a]
the cash flows of the investment are as follows :
| Year | Cash flow |
| 1 | ($38,000) |
| 2 | ($38,000) |
| 3 | ($38,000) |
| 4 | ($38,000) |
| 5 | $25,000 |
| 6 | $26,000 |
| 7 | $27,040 |
| 8 | $28,122 |
| 9 | $29,246 |
| 10 | $30,416 |
| 11 | $31,633 |
| 12 | $32,898 |
| 13 | $34,214 |
| 14 | $35,583 |
| 15 | $37,006 |
| 16 | $38,486 |
| 17 | $40,026 |
| 18 | $41,627 |
| 19 | $43,292 |
| 20 | $45,024 |
| 21 | $46,825 |
| 22 | $48,698 |
| 23 | $50,645 |
| 24 | $52,671 |
| 25 | $54,778 |
| 26 | $56,969 |
| 27 | $59,248 |
| 28 | $61,618 |
| 29 | $64,083 |
| 30 | $66,646 |
| 31 | $69,312 |
| 32 | $72,084 |
| 33 | $74,968 |
| 34 | $77,966 |
| 35 | $81,085 |
| 36 | $84,328 |
| 37 | $87,701 |
| 38 | $91,210 |
| 39 | $94,858 |
| 40 | $98,652 |
| 41 | $102,598 |
| 42 | $106,702 |
The cash flows in first four years are outflows : loss of current earnings $18,000 + tuition fee $20,000 = $38,000
Incremental earnings in year 5 is $25,000, which increases by 4% each year for 42 years (until retirement)
NPV is calculated using the NPV function in Excel, with inputs being rate = 6%, and values being the array of cells containing the cash flows from year 1 to year 42
NPV = $378,344

b]
IRR is calculated using the IRR function in Excel, with input being the array of cells containing the cash flows from year 1 to year 42
IRR = 17%

c]
based on NPV and IRR, he should undertake the program as NPV is positive, and IRR is higher than the borrowing/saving cost of 6%