Hello candidate, for 77 percentile your marks would be around 83 and rank would vary from 450 to 11000. Which is quite good but for taking cs or it its not enough. Although with these marks your friend can surely get seat in other branches. 

Please check this college predictor to know the college you can get- https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/mht-cet-college-predictor&ved=2ahUKEwiZ__3LiebiAhWhheYKHT9TCZsQFjABegQIBxAC&usg=AOvVaw02h2l9ETXofulHe_IAt6Im

• Shri Ramdeobaba College of Engineering and Technology, Nagpur
• Vishwakarma Institute of Technology, Pune
• Yeshwantrao Chavan College of Engineering and Technology, Nagpur
• Pimpri Chinchwad College of Engineering, Pune
• Ramrao Adik Institute of Technology, Navi Mumbai
• K. J. Somaiya College of Engineering, Mumbai
• Cummins College of Engineering, Pune
• Thakur College of Engineering and Technology, Mumbai
• International Institute of Information Technology, Pune
• MIT Academy of Engineering, Pune
• D. Y. Patil College of Engineering and Technology, Pune
• Bharati Vidyapeeth College of Engineering, Pune
• Sinhgad College of Engineering, Pune