Correct Answer - Option 4 : 84
Given:
Ishani’s scores in Economics = 80 out of 150
Ishani’s scores in Statistics = 95 out of 120
Total percentage in 3 subjects = 70%
Calculation:
Total maximum marks = 100 + 120 + 150
⇒ 370
Total marks in History and English = 95 + 80
⇒ 175
Total marks required by her to get 70% = 370 × 70%
⇒ 370 × (70/100)
⇒ 37 × 7
⇒ 259
∴ she needs = 259 – 175
⇒ 84 marks
∴ The minimum marks she should score in Accountancy out of 100 to score 70% marks in 3 subjects is 84 marks.