Alternatively, Nandalal can purchase some new machinery costing $18,000 with a useful life of 9 years to assist with these jobs in the spring and summer. The machinery would also be useful in the fall and winter to prepare the land for the next planting season. This machinery would replace 4 full time workers on the farm. The farm's current machinery is quite old. It was purchased second hand in 2018 for $12,000. It has a useful life of 10 years but needs continual maintenance every year costing an average of $3,000. The family thinks it can be sold for scrap metal for $4,500 today.

Please develop an analysis of this data