
Answer:
Pine Street Inc. should sell finished bookcases as it increases net income by $7.50.
Explanation:
According to the scenario, the computation of the given data are as follows:
                 Sell Unfurnished     Sell finished    Net Income                  Â
Sales per unit          $57.00          $70.00       $13.00
Cost per unit  Â
Variable                  $37.20           $42.70      -$5.50
Fixed                  $9.50           $9.50        0
Total                  $46.70           $52.20      -$5.50
Net income per unit      $10.30           $17.80      $7.50
Net income increases for sell finished goods by $7.50.
So, Pine Street Inc. should sell finished bookcases.