The value of $5\mathrm{\%}$ of $\mathrm{₹}150$ is $\mathrm{₹}k$. Find $k$.

If $4 \mathrm{p}\mathrm{a}\mathrm{i}\mathrm{s}\mathrm{e}$ of $\mathrm{₹}4$ is $k\%$, find $k$.

If $30 \mathrm{s}\mathrm{e}\mathrm{c}\mathrm{o}\mathrm{n}\mathrm{d}\mathrm{s}$ of $3 \mathrm{minutes}$ in terms of percentage is $k\%$, find $k$ (round off to two decimal places).

Find the percentage of the shaded portion in the given figure.

Complete the following table.