Question

Last year there were 221 students and 13 teachers at Hillard School. This year there are 272 students. The principal wants to keep the same student-to-teacher ratio as last year. Which proportion can the principal use to find x, the number of teachers needed this year

Answer 1

Given, the number of students previous year=221, number of students previous year=13

so, student to teacher ratio=221:13=17:1

Let the number of Teachers be x.

APQ: 272:x=17:1

=>

$x = \frac{272}{17} = 16$

So, the number of teachers reuired is 16