The salary of an employee of a company increases every month by $4\%.$ If his salary in August was $₹6,300,$ what will be his approximate salary in the month of October of the same year? 

If a certain sum of money is distributed among $43$ people, each one gets $221$ and $83$ is left. What is the total amount?

What approximate value should come in place of the question marks(?) in the following questions? (Note: you are not expected to calculate the exact value.)

$\frac{{?}^2}{108}=\frac{16}{?}$

Three men or eight boys can do a piece of work in $17$ days. How many days will two men and six boys together take to finish the same work?

The cost price of an item is two third of its selling price. What is the gain/loss percent on that item?

The ratio between the present ages of Dheeraj and Raman is $2:3$ respectively. Four years ago, the ratio between their ages was $5:8$ respectively. What will be Dheeraj's age after $7$ years?

What approximate value should come in place of the question mark?

$4\frac{9}{13}\times 3\frac{6}{19}÷4\frac{4}{7}=?$

What approximate value should come in place of the question mark? (Note: you are not expected to calculate the exact value.)

$3968÷28\times (6{)}^2+410=?$

Three-tenth of a number is equal to$36\%$ of another number. If the sum of these two numbers is $88,$ then what is the value of the smaller number?