ARR = ($130,000 − $100,000)/$500,000 = 0.06 or 6%
NPV = ($130,000 3.791) − $500,000 = ($7,170)
The investment is not acceptable because the NPV is negative.
NPV = ($130,000 3.791) + ($50,000 0.621) − $500,000 = $23,880
Now the investment is acceptable because the NPV is positive.
this because the NPV in the first case is negative. In the second instance, the IRR is