. Your grandfather purchased 1000 shares of Nike stock in August of 1990 for $1.18/she. He just sold it today at the market price of $55/shr. What was the annual interest rate (internal rate of return - IRR) he earned on this investment? Look at the graph below and indicate the Internal Rate of Return (IRR) of the investment. NPV v Interest rate 250 200 150 100 NPV ($) 50 0 -50 0 0.02 0.04 0.06 0.08 0.1 0.12 -100 -150 Interest rate (%/yr) . Which of the following investments might have multiple Internal rates of Return? Year Alternative A Alternative B Alternative C O -1000 -3000 -2300 1 200 700 -2400 2 300 700 0 3 400 700 0 4 500 700 0 U 600 700 2400 6 700 700 2300 17 -500 1700 2200 . Which of these two alternatives is better (use Incremental Internal Rate of Return analysis) at MARR of 10%? Year Alternative A Alternative B O -1500 -3000 1 800 1450 2 800 1450 3 800 1450