Keeping the appropriate cash flow in the cash flow register, using a financial calculator, NPV should be calculated for taking the decision.
Answer: According to the NPV calculated, Chen should buy a new machine.
Explanation:
Cash outflow = $40000
Increase in annual after-tax cash flows : CF = $9000
Place the cash flow on a time line:
0 1 2 10
I 10 I I . . . I
-110000 19000 19000 19000
With a financial calculator, input the appropriate cash flow into the cash flow register, input I/YR = 10, and then solve for NPV. The answer for NPV is $6746.78.
Thus, Chen should buy a new machine.