ГДЗ по математике 6 класс Ерина Виленкин рабочая тетрадь Часть 1, 2 Часть 1 | Страница 95

\[Страница\ 95.\]

\[\boxed{\mathbf{11.}}\]

\[\frac{3}{5} \cdot \left( 1 - \frac{3}{8} \right) = \frac{3}{5} \cdot \frac{5}{8} = \frac{3}{8} - всех\ \]

\[денег\ выдали\ во\ второй\ раз.\]

\[20\ 000\ :\left( 1 - \frac{3}{8} - \frac{3}{8} \right) =\]

\[= 20\ 000\ :\frac{2}{8} = 20\ 000 \cdot 4 =\]

\[= 80\ 000\ рублей.\]

\[Ответ:80\ 000\ рублей.\]

\[\boxed{\mathbf{12.}}\]

\[\textbf{а)}\ 75\% = \frac{75}{100} = \frac{3}{4}\]

\[\textbf{б)}\ 50\% = \frac{50}{100} = \frac{1}{2}\]

\[\textbf{в)}\ 25\% = \frac{25}{100} = \frac{1}{4}\]

\[\textbf{г)}\ 12,5\% = \frac{125}{1000} = \frac{1}{8}\]

\[\textbf{д)}\ 10\% = \frac{10}{100} = \frac{1}{10}\]

\[\textbf{е)}\ 5\% = \frac{5}{100} = \frac{1}{20}\]

\[\textbf{ж)}\ 33\frac{1}{3}\% = \frac{100}{300} = \ \frac{1}{3}\]

\[\textbf{з)}\ 66\frac{2}{3}\% = \frac{200}{300} = \frac{2}{3}\]

\[\textbf{и)}\ 16\frac{2}{3}\% = \frac{50}{300} = \frac{1}{6}\]

\[к)\ 24\frac{1}{5}\% = \frac{121}{500}\]

\[\boxed{\mathbf{13.}}\]

\[\textbf{а)}\ 195\ :\frac{13}{15} = 195 \cdot \frac{15}{13} =\]

\[= 15 \cdot 15 = 225\]

\[Ответ:225.\]

\[\textbf{б)}\ 51\ :\frac{17}{23} = 51 \cdot \frac{23}{17} = 3 \cdot 23 =\]

\[= 69\]

\[Ответ:69.\]

\[\textbf{в)}\ 4\frac{1}{6}\ :\frac{5}{12} = \frac{25}{6} \cdot \frac{12}{5} = 5 \cdot 2 = 10\]

\[Ответ:10.\]