The estimate of the inventory amounts before the fire is as follows:
Total Inventory  $232,845
Lumber   $159,200
Millwork   $54,270
Hardware  $19,375  Â
Data and Calculations:
                    Lumber    Millwork   Hard & Fittings
Gross Markup (%) Â Â Â Â Â Â Â 25% Â Â Â Â Â Â 30% Â Â Â Â Â Â Â Â 40%
Gross Margin (%) Â Â Â Â Â Â Â Â Â 20% Â Â Â Â Â Â 23.1% Â Â Â Â Â Â Â 28.6%
       =         (25%/125%)     (30%/130%)    (40%/140%)
Inventory, Jan. 1 Â Â Â Â $265,900 Â Â Â $93,470 Â Â Â Â $45,600
Purchases          1,544,900    375,100      160,300
Goods available    $1,810,800   $468,570    $205,900
Cost of goods sold   1,651,600    414,300      186,525
Ending inventory   $159,200    $54,270      $19,375    $232,845
Estimating the Cost of Goods Sold:
Sales to Aug. 18 Â Â Â 2,064,500 Â Â Â 538,590 Â Â Â Â Â 261,240
Gross profit          412,900    124,290       74,715
Cost of goods sold  1,651,600    414,300     186,525
Gross profit = Sales x Gross margin
Cost of goods sold = Sales - Gross profit or Sales x (1 - gross margin)
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