$40 \%$ are the passing marks. $A$ student gets $250$ marks yet fails by $38$ marks. What is the maximum marks?

In a company,there are $75\%$ skilled workers and the remaining are unskilled. $80\%$ of skilled workers and $20\%$ of unskilled workers are permanent. If the number of temporary workers is $126$,what is the total number of workers?

The monthly income of a person is $Rs. 5000$. If his income is increased by $30\%$,then what is his monthly income now?

$270$ candidates appeared for an examination,of which $252$ passed. The pass percentage is (in $\%$)?

The number that is to be added to $10 \%$ of $320$ to have the sum as $30 \%$ of $230$ is

$4598$ is $95 \%$ of what number?