A) 89
B) 90
C) 87
D) 88
Correct Answer: B
Solution :
[b] Marks of Supriyo\[=x\] marks According to question Mahuya marks=Supriyo marks\[-\]10% of Supriyomarks \[81=x-10%\,\,of\,\,x\Rightarrow x\,\,\left( 1-\frac{10}{100} \right)\] \[81=\frac{9}{10}x\Rightarrow \frac{810}{9}=x\] \[\therefore x=90\,\,marks\]You need to login to perform this action.
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