solve this how to get itc when gst ur purchase mix with gst registered purchase

sunil kumar (Businessman) (75 Points)

14 August 2018  
Solve this-i purchased agarbatti raw material at that time i dont have gst registration and in invoice seller have mention my pan card and i didnt filed it in gstr portal as i will not get itc and purchased perfume with gst 18% at that time i got my gst number and its filed in gst portal .. And now both purchase are mix to get finished product.
Than how perfume itc will be claimed as this purchase is mixed and how will i give output of perfume for getting itc.