Question 77
The given graph shows the marks obtained by students in an examination.
The number of students who obtained less than 300 marks is what percent more than the number of students who obtained 350 or more marks?
Solution
The number of students who obtained less than 300 marks = 30 + 45 + 60 = 135
The number of students who obtained 350 or more marks = 40 + 35 = 75
Required percentage = $$\frac{135 - 75}{75} \times100 = \frac{60}{75} \times100$$ = 80%
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