please help due date is tomorrow

Answer:
720 girls
Step-by-step explanation:
Calculate the total number of students considering that the 240 boys represent a quarter of the students:
[tex]\frac{240}{\frac{1}{4} } =(240)(4)=960[/tex]
The difference will tell us the number of girls in the school:
[tex]girls=960-240=720[/tex]
Hope this helps.