Lakshman Bhaiya
asked
in Quantitative Aptitude
Mar 30, 2020
retagged
Nov 12, 2020
by soujanyareddy13

583 views
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$\textrm{Let assume that A & B are two students.}$

$\textrm{Now assume B’s marks are x & A’s marks are x+9}$

$\Rightarrow$ $A=(x+9) $

$\Rightarrow$ $B=x$

$\Rightarrow$ $\textrm{(x+9)=x+x+9(56%)}$

$\Rightarrow$ $25x+225=28x+126$

$\Rightarrow$ $3x=99$

$\Rightarrow$ $x=33$

$\textrm{So B=33,A=42}$

$\textrm{Option C}$

$\textrm{Now assume B’s marks are x & A’s marks are x+9}$

$\Rightarrow$ $A=(x+9) $

$\Rightarrow$ $B=x$

$\Rightarrow$ $\textrm{(x+9)=x+x+9(56%)}$

$\Rightarrow$ $25x+225=28x+126$

$\Rightarrow$ $3x=99$

$\Rightarrow$ $x=33$

$\textrm{So B=33,A=42}$

$\textrm{Option C}$