Answer:
Chen should buy the machine
Explanation:
Buying of the new milling machine would make a business sense if the net present value of the new machine is positive.
By net present value I mean if the today's worth of the asset considering its initial cash outflow and subsequent cash inflows bring about a positive worth today.
Net present value=initial cost-cash inflows(discounted to today's terms)
Net present value=-$40,000+($8000*6.4177)
=-$40,000+51341.6
=$11,341.60
The 6.4177 is the annuity factor for 9% cost of capital for 10 years.
Since the project has a positive net present value,Chen should buy the machine