Question

Of the 500 people at the school carnival 91% of them are students and the rest are teachers ​

Answer 1

455 are students, leaving the 45 to be teachers.

Explanation:

90% of 500 is 450, and 1% of 500 is 5, so add the two and you have 455. Simply subtract 455 from 500 and you have the amount of teachers, or 45.