Firstly
As per CIT vs C. R. SUBRAMANIAN :- In case of sale of a land along with the building constructed thereon, for the purpose of Capital Gains, Site & Building were treated as seperate assets and period of holding to be checked for both assets separately.
Hence in the above case capital gain will be Long Term Only
Secondly
Now the capital Gain is (as per information provided)
Sale Consideration 39.50 Lac
Less: Indexed COA 12 Lac * 551 / 389 = Rs. 16,99,473
Less: Indexed COA 2.25 Lac * 551 / 140 = Rs. 8,85,536
Hence Capital Gain is Rs.13,64,991
Pls let me know if there is any mistake on my part