Answer: 1,250
Explanation:
Given: The total number of students in the school= 25,000
Since each class has 10 students , therefore, the number of classes in the school=
![(25000)/(10)=2500](https://img.qammunity.org/2020/formulas/mathematics/middle-school/qw6pgstgvxg4mwefxcxss22g9hthl4aqyp.png)
Also, Each student takes 2 classes a day, thus the number of classes taken by total teachers in a day =
![2*2500=5000](https://img.qammunity.org/2020/formulas/mathematics/middle-school/1f8u0kvdjte6314yg3qoz75olqnrykq8nj.png)
Also, each teacher teaches 4 classes.
Then the number of teachers in the school =
![(5000)/(4)=1250](https://img.qammunity.org/2020/formulas/mathematics/middle-school/rnyvzy2v85lzfd1dx9kh5un69mh8wr0w4v.png)
Hence, the number of teachers are at Big Big School = 1,250