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Study the following pie-charts carefully to answer these questions.
Percentage of Students in a College, Studying Various Subjects and the Percentage of Girls out of these
Total students: 1800 (1200 girls + 600 boys) Percentage of students in various subjects
Total Girls : 1200
Percentage of students in various subjects
We know total girls = 1200, total boys = 600
From the first pie chart, we know it is given for girls and boys combined.
Out of 1800 girls and boys, 35% of the girls are studying political science.
That is, number of total students studying political science = 35% of 1800 = 630
Also, from the second pie chart, we know it is given for girls.
Out of 1200 girls, 30% of the girls are studying political science.
That is, number of girls studying political science = 30% of 1200 = 360
Thus, boys studying political science = 630-360 = 270.
Therefore, the ratio of boys and girls studying political science = 270:360 = 3:4
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