Nutan got $456$ marks in an exam. Aditya got $54 \%$ marks in the same exam,which is $24$ less than Nutan. The minimum passing marks in the exam is $35 \%$. How many marks did Nutan get more than the passing marks?

$A$ set $A$ consists of integers $27, 28, 30, 32$ and $33$. If an integer $K$ is included,the average of set $A$ will increase by $30\%$. What is the value of integer $K$?

The population of a city increases at the rate of $5 \%$ per annum. If the present population of the city is $3,70,440$,its population $3$ years ago was:

The price of an article is cut by $20 \%$. To restore it to its original price,the new price must be increased by:

How many students passed in first class?
Statements:
$I$. $85 \%$ of the students who appeared in the examination have passed either in first class,second class,or pass class.
$II$. $750$ students have passed in second class.
$III$. The number of students who passed in pass class is $28 \%$ of those who passed in second class.

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