\[\boxed{\mathbf{634\ }\left( \mathbf{634} \right)\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
Пояснение.
Решение.
\[1)\ \frac{4}{8} \cdot 100\% = \frac{4 \cdot 100}{8}\% =\]
\[= \frac{100}{2}\% = 50\%\]
\[2)\ \frac{2}{10} \cdot 100\% = \frac{2 \cdot 100}{10}\% =\]
\[= 2 \cdot 10\% = 20\%\]
\[3)\ \frac{12}{48} \cdot 100\% = \frac{12 \cdot 100}{48}\% =\]
\[= \frac{100}{4}\% = 25\%\]
\[4)\frac{45}{300} \cdot 100\% = \frac{45 \cdot 100}{300}\% =\]
\[= \frac{45}{3}\% = 15\%\]
\[5)\ \frac{64}{400} \cdot 100\% = \frac{64 \cdot 100}{400}\% =\]
\[= \frac{64}{4}\% = 16\%\]
\[6)\ \frac{138}{120} \cdot 100\% = \frac{138 \cdot 100}{120}\% =\]
\[= \frac{69 \cdot 5}{3}\% = 23 \cdot 5\% = 115\%\]