Sunnyside Marine Products began the year with 10 units of marine floats at a cost of $11 each. During the year, it made the following purchases: May 5, 30 unit at $16; July 16, 15 units at $19; and December 7, 20 units at $23. Assuming there are 25 units on hand at the end of the period, determine the cost of goods sold under (a) FIFO, (b) LIFO, and (c) average-cost. Sunnyside uses the periodic approach.

The direct costs of manufacturing the goods that a company sells are referred to as COGS. The cost of the materials and labor directly employed to make the good is included in this figure.

Sunny side Marine Products

a) FIFO:= $780

(b) LIFO:= $985

(c) Average-cost:= $890

SOLUTION:-

a) Data and Calculations:-

Date          Description             Units  Unit cost  Total

January 1  Beginning Inventory  10         $11        $110

May 5,       Purchase                   30        $16        480

July 16       Purchase                   15         $19       285

Dec. 7       Purchase                  20        $23       460

Dec. 31     Ending Inventory      25

Dec. 31      Total Units Sold        50                    $1,335

Average Cost = Total cost/Total inventory available

= $1,335/75

=$17.80

FIFO:-Cost of goods sold = (10 * $11) + (30 * 16) + (10 * 19) = $780

LIFO:- Cost of goods sold = (20 * $23) + (15 * $19)  + (15 * 16)= $985

Average-Cost:- Cost of goods sold = 50 * $17.80

b) Average-cost uses the average cost of goods available for sale divided by the total units available for sale under the periodic inventory system.

FIFO is based on the assumption that the first goods sold are the ones bought first.  LIFO assumes that the first goods sold are the last ones bought.

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Sunnyside Marine Products

Determination of the Cost of Goods Sold under:

a) FIIFO:

= $780

(b) LIFO:

= $985

(c) Average-cost:

= $890

Explanation:

a) Data and Calculations:

Date          Description             Units  Unit cost  Total

January 1  Beginning Inventory  10         $11        $110

May 5,       Purchase                   30        $16        480

July 16       Purchase                   15         $19       285

Dec. 7        Purchase                  20        $23       460

Dec. 31      Ending Inventory      25

Dec. 31      Total Units Sold        50                    $1,335

Average Cost = Total cost/Total inventory available

= $1,335/75

=$17.80

FIFO:Cost of goods sold = (10 * $11) + (30 * 16) + (10 * 19) = $780

LIFO: Cost of goods sold = (20 * $23) + (15 * $19)  + (15 * 16)= $985

Average-Cost: Cost of goods sold = 50 * $17.80

b) Average-cost uses the average cost of goods available for sale divided by the total units available for sale under the periodic inventory system.

FIFO is based on the assumption that the first goods sold are the ones bought first.  LIFO assumes that the first goods sold are the last ones bought.

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