Assume McCormack Tire, Inc., completed the following perpetual inventory transactions for a line of tires.

Beginning Inventory .................................... 27 tires @ $140

Purchase................................................. 39 tires @ $136

Sale ...................................................... 42 tires @ $204

Requirement

1. Compute cost of goods sold and gross profit under FIFO.

2. Compute cost of goods sold and gross profit using LIFO.

3. Compute cost of goods sold and gross profit using average cost. Round average cost per unit to the nearest cent and all other amounts to the nearest dollar.

4. Which method results in the largest gross profit and why?