The table below shows the percentage of student and 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 If 10 \% of the girls from college A are transferred to college {E}, then what is the increase in the percentageof girls in college {E} ?

SSC CGL 10 Jun 2019 Shift 2 Paper

Question : 59 of 100

Marks: +1, -0

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

=1800

10 \%

of the girls from college

A

are transferred to college

\ {E},

then what is the increase in the percentageof girls in college

\ {E}

Solution:

No. of girls in

A=1800 \ ×\ ×{20}/{100} \ ×\ {5}/{9}=200

\→20 \%

of A's girls transfered to

E=20

No. of girls in

E=1800 \ ×\ {10}/{100} \ ×\ {3}/{5}=108

Earlier percentage of girls

=60 \%

New percentage of girls

=\ {128}/{200} \ ×100=64 \%

\∴

Required difference in percentage

=64 \%-60 \%=4 \%

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