Cost of acquisition where only land is sold after demolishing the building

Smriti Agarwal (Self employed ) (24 Points)

27 March 2022  

I have sold a land in 2021 after demolishing the building.  The buyer wanted us to demolish the building before getting the registry of land .

We purchased both the building and land in 1960. 

What should be the cost of acquisition as on 2001.