Hello Aspirant,

1. Minimum Percentile for IIM A/B: While there isn't a specific percentile to guarantee you admission to IIM Ahmedabad or IIM Bangalore, a 99+ percentile CAT score is typically deemed competitive at these schools in particular for GEM candidates. The percentile is only one consideration alongside your academic history, experience and other accomplishments, so the required percentile is variable.
2. Is it worth trying without work experience - It is possible for you to get into IIMs with no work experience; however, preferably in particular for IIM A/B, candidates typically have gained work experience along with 2+ other years in the workplace when they apply for an MBA. These colleges want candidates to demonstrate real-world experiences where they were impactful, have taken on leadership roles etc. In other words, if your goal is Management Consulting, the experience in your current job offer will provide you with solid practical experience and credibility to apply later.
3. Should wait or go ahead with job offer - If Management Consulting is your goal, the real value of the job offer is through the work experience. Over the long term, securing work experience through the job offer is valuable and beneficial to your profile. IIMs really appreciate a mix of academic performance, experience in the workforce and individuals who demonstrate past leadership potential to make the jump into an MBA. Besides, if you take the job, it also gives you time to stretch your mind to determine if management consulting is really what you want to do with your life before you apply for an MBA.