\[\text{\ x\ }и\ y - данные\ числа.\]
\[1)\ x + y = 1100\]
\[y = 1100 - x.\]
\[2)\ x \bullet 6\% = y \bullet 5\%\]
\[x \bullet \frac{6}{100} = y \bullet \frac{5}{100}\]
\[6x = 5y\]
\[y = \frac{6}{5}x.\]
\[3)\ Наибольшее\ число:\]
\[1100 - x = \frac{6}{5}x\]
\[5500 - 5x = 6x\]
\[11x = 5500\]
\[x = 500;\]
\[y = 6 \bullet 100 = 600.\]
\[Ответ:\ \ 600.\]