Final answer:
To find the number of teachers required for 300 students using a given student to teacher ratio of 19:1, we set up a proportion and solve for the unknown number of teachers. The answer is 16.
Step-by-step explanation:
To find out how many teachers are required for 300 students, we can use the given student to teacher ratio of 19:1. This means that for every 19 students, there is 1 teacher. We can set up a proportion to solve for the number of teachers:
 19 students/1 teacher = 300 students/x teachers
 Cross multiplying, we get:
 19x = 300
 Dividing both sides by 19, we find:
 x = 15.79
 Since we can't have a fraction of a teacher, we round up to the next whole number. Therefore, we need 16 teachers for 300 students.
 Learn more about Finding the number of teachers for a given number of students using a student to teacher ratio