Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March.

Date

Activities

Units Acquired at Cost

Units Sold at Retail

Mar.

1

Beginning inventory

190

units

@ $52.80 per unit

Mar.

5

Purchase

270

units

@ $57.80 per unit

Mar.

9

Sales

350

units

@ $87.80 per unit

Mar.

18

Purchase

130

units

@ $62.80 per unit

Mar.

25

Purchase

240

units

@ $64.80 per unit

Mar.

29

Sales

220

units

@ $97.80 per unit

Totals

830

units

570

units

4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, the March 9 sale consisted of 110 units from beginning inventory and 240 units from the March 5 purchase; the March 29 sale consisted of 90 units from the March 18 purchase and 130 units from the March 25 purchase. (Round weighted average cost per unit to two decimals.)