which is better doing bs-ms from iiser kolkata or petroleum engineering from rgipt.where i wl gt a good package?

Go for a very simple exercise, i.e. visit the official weblinks of both the institutions and try to explore the details about fee structure, student intake, placement data and pay package etc, and wherever you find a better information, go for that........else there is a plenty of highly reputed institution offering quality education as well as best ever placements, like – Galgotias Uni, Greater Noida,....................JJTU, Jhujnjhunu,.......................Banasthali Uni, Banasthali,..........................Lovely Professional Uni, Phagwara.......   you may visit them one by one, have a comparative analysis and then choose any one for seeking admission.