[The following information applies to the questions displayed below.]

Warnerwoods Company uses a periodic 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

150

units

@ $40 per unit

Mar.

5

Purchase

450

units

@ $45 per unit

Mar.

9

Sales

470

units

@ $75 per unit

Mar.

18

Purchase

220

units

@ $50 per unit

Mar.

25

Purchase

300

units

@ $52 per unit

Mar.

29

Sales

260

units

@ $85 per unit

Totals

1,120

units

730

units

For specific identification, the March 9 sale consisted of 40 units from beginning inventory and 430 units from the March 5 purchase; the March 29 sale consisted of 90 units from the March 18 purchase and 170 units from the March 25 purchase.

4. Compute gross profit earned by the company for each of the four costing methods. (Round your average cost per unit to 2 decimal places and final answers to nearest whole dollar.)