Will Maharashtra board percentage will help me to take admission in engineering college
Yes, they do. According to the new regulations, at least you need 75% in +2 and also some engineering colleges give admission directly if you have more intermediate marks.
All the best.
Yes sure your Maharastra board percentage will be calculated as 12th and you have mention it eberywhere you will apply.Either it is further studies of anything else.
Marks obtained in the 12th class in the boards examination are very important for anyone's career.
Good luck!!!