SSC CGL 24 Aug 2021 Shift 3 Paper

Question : 74 of 100

Marks: +1, -0

Study the following table and answer the questionPercentage of marks obtained by six students

A, B, C, D, E

and

F

in five subjects.

The total marks obtained by students

{C}, {D}

and

{F}

in Science is what per cent more than the total marks obtained by B in Science, Hindi and Social Studies?

Solution:

Total marks obtained by Student C in Science

=85 \%

of 80

=80 × \;{85}/{100}=68 \;\text " marks "\;

Marks obtained by D in Science.

=75 \% \;\text " of "\; 80=80 × \;{75}/{100}=60

Marks obtained by

{F}

in Science

=65 \% \;\text " of "\; 80=80 × \;{65}/{100}=52

Total marks of

C+D+F=68+60+52=180

Total marks obtained by

B

in Science + Hindi + Social Science

\;\; =80 × 75 \%+75 × 68 \%+100 × 49 \%

\;\; =80 × \;{75}/{100}+75 × \;{68}/{100}+100 × \;{49}/{100}

\;\; =60+51+49=160

Marks increase in per cent

=\;{180-160}/{160} × 100=12.5 \% .

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