Study the given graph and answer the question that follows.
The total number of students obtaining less than 50 marks is what percentage more than the total number of students obtaining 60 marks or more (correct to one decimal place).
Answer & explanation
Correct answer: option 4
Number of students obtaining less than 50 marks = 45 + 78 + 110 + 142
= 375
Number of students obtaining marks 600 or above = 120 + 100 + 80 + 55
= 355
Required percentage = \(\frac{375 - 355}{355}\) × 100
= \(\frac{20}{355}\) × 100
= 5.6%