Study the given pie chart and answer the question that follows.
The pie chart shows the distribution (degree-wise) of the students who appeared in the annual examination from institutes P Q R S and T in 2020. The total number of students who appeared is 3000.
The ratio of the number of boys and girls who appeared in the examination from institutes S and T is 11 : 12 and 5 : 4. respectively. What is the difference between the total number of boys who appeared from institutes S and T and the total number of girls who appeared from these two institutes?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 20.
Number of students from institute S = (82.8/360) × 3000 = 690
Boys = (11/23) × 690 = 330 and Girls = 690 - 330 = 360
Number of students from institute T = (54/360) × 3000 = 450
Boys = (5/9) × 450 = 250 and Girls = 450 - 250 = 200
Difference = (330 + 250) - (360 + 200) = 580 - 560 = 20