Correct Answer - Option 4 : None of these
Given:
He scored an aggregate of 80% marks in 5 subjects in the ratio 12 : 11 : 10 : 9 : 8.
50% are the passing marks of the maximum marks.
Formula Used:
Simple Concept of Ratio.
Calculation:
Let the maximum marks of each subject be 100.
passing marks = 50% of 100 = 50
So, total marks in five subjects = 500
Student got 80% aggregate marks i.e. 80% of 500 = 400
Given ratio 12 : 11 : 10 : 9 : 8.
Let the marks in 5 subjects be 12x, 11x, 10x, 9x and 8x
So, 12x + 11x + 10 x + 9x + 8x = 400
⇒ 50x = 400
⇒ x = 8
Marks in subject Maths = 12x = 12 × 8 = 96
Marks in subject Science = 11x = 11 × 8 = 88
Marks in subject Social science = 10x = 10 × 8 = 80
Marks in subject English = 9x = 9 × 8 = 72
Marks in subject Hindi = 8x = 8 × 8 = 64
His marks in all subjects are more than passing marks.
∴ He passed in all subjects.