Manager (Advance)
901 Points
Joined March 2008
Let, opening stock=x
Closing Stock=x+3000
hence, Average Stock=x+x+3000/2=2x+3000/2=x+1500
Also, average stock=12000,
therefore, x+1500=12000 or x=10500
Hence, Opening Stock=x=10500
and Closing Stock=x+3000=10500+3000=13500