Laker Company reported the following January purchases and sales data for its only product. For specific identification, ending inventory consists of 180 units from the January 30 purchase, 5 units from the January 20 purchase, and 15 units from beginning inventory.

Date	Activities	Units Acquired at Cost	Units sold at Retail
January 1	Beginning inventory	140	units	@	$ 6.00	=	$ 840
January 10	Sales							100	units	@	$ 15
January 20	Purchase	60	units	@	$ 5.00	=	300
January 25	Sales							80	units	@	$ 15
January 30	Purchase	180	units	@	$ 4.50	=	810
	Totals	380	units				$ 1,950	180	units

Assume the perpetual inventory system is used.

Required:

1. Compute gross profit for the month of January for Laker Company for the four inventory methods.
2. Which method yields the highest gross profit?
3. Does gross profit using weighted average fall between that using FIFO and LIFO?
4. If costs were rising instead of falling, which method would yield the highest gross profit?

Compute gross profit for the month of January for Laker Company for the four inventory methods. Note: Round cost per unit to 2 decimal places and final answers to the nearest whole dollars