1 Answers

Option 4 : 22%

Calculation:

Total number of students = 250

Total number of students who scored less than 70% marks = (10 + 30 + 80) = 120

The percentage of students who scored less than 70% marks = (120/250 × 100)

⇒ (12 × 4) = 48%

Now,

Total number of students who scored 80% and above = (40 + 25) = 65

The percentage of students who scored 80% and above = (65/250 × 100)

⇒ (13 × 2) = 26%

Now,

The difference between the percentage of students who scored less than 70% marks and the percentage of students who scored 80% and above = (48 – 26)%

⇒ 22%

∴ The required difference is 22%

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