A farmer pays annually 500 dinars for plowing rent on his farm. The farmer thought of buying a tractor to carry out the plowing process for his farm instead of renting, and exploiting the tractor by renting it to the neighbors at an annual amount of 1,500 dinars. And after making inquiries from the agricultural companies about the prices of tractors, maintenance costs and fuel. He offered a used tractor at an amount of 9000 dinars, and the estimated life of the tractor was six years. The maintenance and fuel costs were estimated at 300 dinars annually. Note that there is an opportunity to invest the amount (9000 dinars) in an alternative project that generates an income of 5% annually.

Do you recommend the farmer to buy the tractor? Why? Show this using the NPV standard.