Take a $10\times 10$ square grid to recall the previous knowledge on fractions. The grid is shaded using $5$ different colours. The particulars related to blue colour shaded portion shown in the grid is given in the table below. Observe the grid and complete the table.

$\begin{array}{|cccc|}\hline \mathrm{Colour}& \mathrm{Number}\mathrm{of}Squares& \mathrm{Fraction}& \mathrm{Percentage}\\ \mathrm{Blue}& 30& \frac{30}{100}& 30\%\\ \mathrm{Red}& & & \\ \mathrm{Yellow}& & & \\ \mathrm{Green}& & & \\ \mathrm{Pink}& & & \\ \hline\end{array}$ 

Find the percentage of children whose scores fall in different categories given in table below.

$\begin{array}{|lcll|}\hline \mathrm{Category}& \mathrm{Number}\mathrm{of}students& \mathrm{Fraction}& \mathrm{Percentage}\\ \mathrm{Below}60& 25& & \\ 60-80& 23& & \\ 81-90& 42& & \\ 91-99& 9& & \\ \mathrm{Centum}& 1& & \\ \mathrm{Total}& 100& & \\ \hline\end{array}$

There are $50$ students in class VII of a school. The number of students involved in these activities are:

$\begin{array}{|ll|}\hline \mathrm{Scout}& 7 \\ \mathrm{Red} \mathrm{Ribbon} Club& 6\\ \mathrm{Junior} \mathrm{Red}Cross& 9\\ \mathrm{Green} Force& 3\\ \mathrm{Sports}& 14\\ \mathrm{Cultural}activity& 11\\ \hline\end{array}$

Find the percentage of students who are involved in various activities.

Convert the fraction $\frac{1}{20}$ as percentage. (Write the numerical value without units)

Convert the fraction $\frac{13}{25}$ as percentage.

Convert the fraction $\frac{45}{50}$ as percentage.

Convert the fraction $\frac{18}{5}$ as percentage.

Convert the fraction $\frac{27}{10}$ as percentage.

Convert the fraction $\frac{72}{90}$ as percentage.