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