Answer:
[tex]\frac{2}{3}[/tex]
Step-by-step explanation:
Sum the frequency column to find the total number of students
total = 2 + 9 + 5 + 5 + 3 = 24
number of students finished in less than 20 mins = 2 + 9 + 5 = 16
fraction of students = [tex]\frac{16}{24}[/tex] = [tex]\frac{2}{3}[/tex]
