The number of senior, middle-aged, and young teachers at a certain school is shown in the table below. Using stratified sampling to investigate the physical condition of teachers, in the sample drawn, there are 320 young teachers. Then the number of senior teachers in the sample is\n\n\n
\n\nCategory
Number of People
\n\nSenior Teachers
900
\n\nMiddle-aged Teachers
1800
\n\nYoung Teachers
1600
\n\nTotal
4300
\n\n
\n
The number of senior, middle-aged, and young teachers at a certain school is shown in the table below. Using stratified sampling to investigate the physical condition of teachers, in the sample drawn, there are 320 young teachers. Then the number of senior teachers in the sample is\n\n\begin{center}\n\begin{tabular}{|l|l|}\n\hline\nCategory & Number of People \\\n\hline\nSenior Teachers & 900 \\\n\hline\nMiddle-aged Teachers & 1800 \\\n\hline\nYoung Teachers & 1600 \\\n\hline\nTotal & 4300 \\\n\hline\n\end{tabular}\n\end{center}