When a student scores 30% marks, he fails by 5 marks. But when he scores 40% marks, he gets 10 more marks than passing marks. Find the passing percentage.
Answer & explanation
Correct answer: option 3
Let total marks = x
30% of x +5 = 40% of x -10
15 = 10% of x
15= \(\frac{1}{10}\) x
150 = x (total marks)
Passing % = 30% + \(\frac{5}{150}\) × 100
= 30% + 3\(\frac{1}{3}\)%
= 33\(\frac{1}{3}\)%