I just want to know how we calculated IRR for project A and B

4. Two mutually exclusive projects have projected cash flows as follows: a. Determine the internal rate of return for each project. b. Determine the net present value for each project at discount rates of 0,5,10,20,30, and 35 percent. c. Plot a graph of the net present value of each project at the different discount rates. d. Which project would you select? Why? What assumptions are inherent in your decision? PROJECT B IS A BETTER OPTION AND IT SHOULD BE CHOSEN ( ASSUMPTION BEING THAT THE NPV OF PROJECT B IS MORE THAN OF A ONLY WHEN DISCOUNT RATE IS LESS THAN 30\%. ) CHOOSING BETWEEn IRR AND NPV, NPV IS A BETTER OPTION