Study the following bar graph and answer the following questions.
The bar graph shows the distribution of marks obtained by students in examinations.
If 60% of the total number of students obtaining 50 marks or more but less than 70 marks are girls and 55% of the total number of students obtaining 70 marks or more but less than 90 marks and also girls then the total number of girls obtaining 50 marks or more but less than 90 marks is?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 261
| Application |
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From the bar graph, we can see that marks obtained between 50-60 by150 students and between 60-70 by 120 students. So the total number of students equals 150 + 120 = 270. According to the question, number of girls = 270 × (60/100) = 162. Now, ranging 70-80 by 100 students and 80-90 by 80 students So, total students = 100 + 80 = 180. Girls = 180 × (55/100) = 99 So the total number of girls = 162 + 99 = 261. |