You have the following information for Wirth Inc. for the month ended June 30, 2012. Wirth uses the periodic method for inventory.

Unit Cost or

Date

Description

Quantity

Selling Price

Jun-01

Beginning inventory

25

$60

Jun-04

Purchase

85

63

Jun-10

Sale

60

90

Jun-11

Sale return

5

90

Jun-18

Purchase

35

66

Jun-18

Purchase return

15

66

Jun-25

Sale

55

95

Jun-28

Purchase

20

70

Instructions

(a) Calculate (i) ending inventory, (ii) cost of goods sold, (iii) gross profit, and (iv) gross profit rate under each of the following methods.

(1) LIFO.

(2) FIFO.

(3) Average-cost. (Round cost per unit to three decimal places.)

(b) Compare results for the three cost flow assumptions.