Here's the question you clicked on:
Katieann16
The area of a classroom space per student varies inversely with the number of students in the room. When there are 15 students in the room, each student has 20 sq ft of space. How many square feet of space are available per student when there are 25 students in the classroom?
it's inverse ratio. 15 students -> 20 sq ft 25 students -> x sq ft so; 15*20=25*x 300=25x x=12
do you understand @Katieann16