CAT

I believe, basic mathematics is a must for MBA exams and later stage in life as a manager also. I would suggest you to practice and get acquainted with basic mathematics, and then think about doing MBA in IT in any college with decent placements. Without a decent score in exam will refrain you from a good college.

You need 70% in CAT .

You sure do. But aim for a higher percentile in the range of 99.6+ for getting a call & converting it .

Hi,
TIME, CL, IMS Learning, PT Education are some good known institutes for CAT exam preparation. You can check the below link for more coaching institutes for CAT –
https://www.shiksha.com/top-10-coaching-institutes-in-india-for-mba-entrance-preparation-article-11477-1

You can try in Balaji Institutes Pune, ITM Mumbai, Christ University Bangalore, Alliance University Bangalore or AIMS Bangalore with your score.

You need to score above 75 percentile to be on the safe side and get a call from IIMs.

You will not face any difficulty. But, it will be better to give exam in last year as you can check your level and according to that you can schedule your preparation.

Hi,
Following are the best colleges in Mumbai:
1. JBIMS
2. S.P. Jain
3. NITIE
4. Sailesh J Mehta IITB
5. SIMSREE
6. KJ Somaiya