§ Задание 323
\[\boxed{\mathbf{2.}\mathbf{323}}\]
\[\textbf{а)}\ 38\% = 0,38 = \frac{38}{100} = \frac{19}{50}.\]
\[\textbf{б)}\ 65\% = 0,65 = \frac{65}{100} = \frac{13}{20}.\]
\[\textbf{в)}\ 70\% = 0,7 = \frac{7}{10}.\]
\[\textbf{г)}\ 90\% = 0,9 = \frac{9}{10}.\]


