QUANTITATIVE APTITUDE The table below shows the percentage of studentsand the ratio of boys and girls in different colleges. Total students = 1800 College % Students Boys : Girls A 20 4 : 5 B 18 1 : 2 C 14 4 : 3 D 22 6 : 5 E 10 2 : 3 F 16 9 : 7 What is the percentage of girls in colleges D, E and F taken together, (nearest to one decimal place)?

SSC CGL 10 Jun 2019 Shift 2 Paper

Question : 51 of 100

Marks: +1, -0

QUANTITATIVE APTITUDE

The table below shows the percentage of studentsand the ratio of boys and girls in different colleges.
Total students = 1800

What is the percentage of girls in colleges

D, E

and

F

taken together, (nearest to one decimal place)?

Solution:

Number of girls is college

D=\ {1800}/{100} \×22 \×\ {5}/{11}=180

Number of girls is college

\ {E}

=\ {1800}/{100} \×10 \×\ {3}/{5}=108

Number of girls is college

\ {F}

=\ {1800}/{100} \×16 \×\ {7}/{16}=126

Total numbers of students

D, E

and

F=396+180+288

=864

Required percentage

=\ {414}/{864} \×100=47.9 \%

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