A rectangle has 15 cm as its length and 150 cm² as its area. If the area is increased to 1\( \frac{1}{3} \) times the original area by increasing its length only, then the new perimeter is:
If \( \frac{2}{5} \) of the number of girl students attending a school function is equal to \( \frac{3}{5} \) of the number of boys attending the function, what fraction of the total students attending the function will be \( \frac{2}{5} \) of the number of girl students attending the function?
\( \frac{2}{3} \)
\( \frac{1}{5} \)
\( \frac{6}{25} \)
\( \frac{5}{6} \)