Answer:
a. initial outlay = -$820,000
net cash flows years 1 - 5 = $240,000
net cash flow year 6 = $340,000
discount rate = 12%
using a financial calculator:
NPV = $217,400.87
IRR = 20.55%
b. initial outlay = -$560,000
net cash flows years 1 - 7 = $150,000
net cash flow year 8 = $206,000
discount rate = 12%
using a financial calculator:
NPV = $207,763.43
IRR = 21.65%