84% in 10th and 78% in 12th is a decent score and you can get admission to the XLRI HR program. Although there are no strict guidelines mentioned by XLRI regarding the weightage for 10th, 12th, XAT, and interview. But with the above-mentioned 10th and 12th scores, a good XAT score, and a well-delivered interview, you can get admission into the XLRI Jamshedpur HR course.