Answer:
Product category     units      cost      NRV  year-end inventory
Tools:
- Hammers       110       $4.10     $4.60       $451
- Saws           110       $9.10     $8.10       $891
- Screwdrivers    210       $1.10     $1.70       $231
Paint products:
- 1-gallon cans    410       $5.10     $4.10      $1,681
- Paint brushes    110       $3.10    $3.60       $341
1) carrying value of year-end inventory:
Tools: Â Â Â Â Â Â Â Â Â Â Â Â
- Hammers       $451
- Saws           $891
- Screwdrivers    $231
- sub-total       $1,573
Paint products: Â Â Â Â $2,022
- 1-gallon cans   $1,681
- Paint brushes    $341
- sub-total      $2,022
Total              $3,595
2) adjustment to tools:
Dr Cost of goods sold 110
  Cr Inventory: tools 110
adjustment to paint products:
Dr Cost of goods sold 410
  Cr Inventory: paint products 410
or total adjustment to inventory account:
Dr Cost of goods sold 520
  Cr Inventory 520