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CAT 2020 Set-3 | Question: 75

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2 2 votes
Let us assume that the total marks is $100x$

Then Bishnu marks =$52x$

Asha marks = $64x$

Now according to the question, if $y$ is the mark obtained by Ramesh,

$52x=y-23 \longrightarrow (1)$

$64x=y+34 \longrightarrow (2)$

Equation $(2)-(1)$

$\Rightarrow 12x=57 $

$\Rightarrow x= \frac{57}{12}$

$\therefore 84x=\frac{57*84}{12}=399$

Note: $84x$ means scored obtain by Gita that is $84 \%$

So option $B$ is correct.
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