This is the 2377th most frequent Swedish word.
femton
Fifteen.
The word 'femton' is used here as a cardinal number to count the quantity of students.
Det är femton elever i klassrummet.
There are fifteen students in the classroom.
In this sentence, 'femton' specifies the number of minutes, indicating a time interval.
Han vaknade femton minuter för sent idag.
He woke up fifteen minutes too late today.
Here, 'femton' represents a percentage, quantifying a proportion of the group that responded correctly.