In an engineering institution, a student’s grade is assessed based on Internal tests (30%), assignments (30%) and external exams (40%). If a student scored 90% in internal tests, 95% in assignments and 75% in the external exams, then the overall grade of the student is:

85.50%

90% = \(\frac{9}{10}\) , 95% = \(\frac{19}{20}\) % 75% = \(\frac{3}{4}\)

According to question ,

Total percentage of Student grade  =  90% of internal test + 95% of Assignments + 75% of external exam

 = \(\frac{9}{10}\) × 30% + \(\frac{19}{20}\) × 30% + \(\frac{3}{4}\) × 40%

 = 27% + 28.5% + 30%

 The overall grade of the student is 85.50%.