On a family camping trip, 5 backpacks can fit in the trailer for every 3 people. If 9 people are going on the trip, how many backpacks can fit?
12 backpacks
14 backpacks
15 backpacks
24 backpacks
If 5 backpacks can fit in the trailer for every 3 people, then for 9 people:
9 people / 3 people = <<9/3=3>>3 groups of 3 people
3 groups of 3 people * 5 backpacks = <<3*5=15>>15 backpacks
Therefore, 15 backpacks can fit in the trailer. The correct answer is 15 backpacks.