Directions: Study the given graph and answer the question that follows.
Distribution of marks obtained by students in an examination:
If 60% of the total no. of students obtained 50 marks or more but less than 70 marks are girls and 55% of the total no. of students obtaining 70 marks or more but less than 90 marks are 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
the total no. of students obtained 50 marks or more but less than 70 marks :
= 150 + 120 = 270
60% of 270 = 162
the total no. of students obtaining 70 marks or more but less than 90 marks:
= 100 + 80 = 180
55% of 180 = 99
total no. of girls obtaining 50 marks or more but less than 90 marks is = 162 + 99 = 261