Answer:
12.26%
Explanation:
Using financial calculator:
1. Press CF
CFo = -450,000 (Enter)
C01 = 250,000 F01 = 1
C02 = 125000 F02 = 1
C03 = 110000 F03 = 1
C04 = 80000 F04 = 1
2. Press 2nd + Enter to quit
3. Press CPT + IRR
--> Internal rate of return of this project is 12.26%