What type of stock valuation would a vegetable seller adopt in valuing it's product?

     1/1/2010                     31/12/2010
Creditors - #9,000            #9,800
Rent owing - #3,800        #2,500
Rates prepaid - #2,000   #3,500
Motor van - #8,000         #8,000
Premises - #10,000        #10,500

Calculate the closing capital

Given:

Opening capital - #50,000
Closing capital - #64,000
Drawings - #16,000

Determine the net profit