During the year, Rosenberg Incorporated has the following inventory transactions.

Date Transaction Number of Units Unit Cost Total Cost

January $1$ Beginning inventory $29$ $$31$ $$899$

March $4$ Purchase $34301,020$

June $9$ Purchase $39291,131$

November $11$ Purchase $39271,053$

$141$ $$4,103$

For the entire year, the company sells $110$ units of inventory for $$39$ each.

Required:

$1-$a & b$.$ Using FIFO, calculate ending inventory and cost of goods sold.

$1-$c & d$.$ Using FIFO, calculate sales revenue and gross profit.

$2-$a & b$.$ Using LIFO, calculate ending inventory and cost of goods sold.

$2-$c & d$.$ Using LIFO, calculate sales revenue and gross profit.

$3-$a & b$.$ Using weighted$-$average cost, calculate ending inventory and cost of goods sold.

$3-$c & d$.$ Using weighted$-$average cost, calculate sales revenue and gross profit.

$4.$ Determine which method will result in higher profitability when inventory costs are declining.