For an examination of a practical-based subject, the total marks are 100. The breakup tip for theory, practical, project, and viva voice is 30%, 20%, 25%, and 25%. A candidate scored 60% in theory, 70% in practical, 80% in the project, and 90% in viva. What was her aggregate percentage?

74.5%

Total Marks = 100

                      Theory   :   Practical   :   Project   :   Viva-voice

Max marks:       30       :       20        :       25      :        25

Marks scored:   18       :       14        :       20      :       22.5

Aggregate percentage = \(\frac{18 + 14 + 20 + 22.5}{100}\) × 100 = 74.5%