Correct Answer - Option 3 : 500
Given,
The marks = 45%
He got = 145 marks
And failed = 80 marks
Calculation
Given that the students got 145 marks and still he failed by 80 marks
⇒ The minimum pass mark = 145 + 80 = 225
Given that minimum pass mark = 45% of the entire mark
⇒ The total mark × 45/100 = 225
⇒ The total mark = 22500/45 = 500
∴ The total number = 500