The capacity of an elevator is either 15 children or 11 adults. If 8 children are currently in the elevator, how many adults can still get in?

Answer 1

15 children equals 8 adults
so 1 child equals 8/15 adults
then 8 children is the same as 88/15 or 5.8 adults ---> 6 adults, since we can't have a partial adult

so there is still room for 5 more adults