Answer:
85
Explanation:
The number of boys is 5/12 of the students. There are 75 boys.
To find the total amount of students, divide the number of boys the fraction they are of the students. When you dividing with fraction, the number that is dividing will be flipped upside down and multiplied by the other number.
75 ÷ 5/12
75 × 12/5
180
There are 180 total student. Since the fraction of students that were boys is 5/12, the fraction of students that are girls will be 7/12. Multiply this fraction by the total amount of students.
180 × 7/12
85
85 of the students are girls.