Final answer:
Each student got ⅛ cup of strawberries in their yogurt.
Step-by-step explanation:
To find out how many cups of strawberries each student got in their yogurt, we need to divide the total number of cups of strawberries, which is 6, among the 20 students.
We can do this by dividing 6 by 20. This gives us the fraction ⅛ or 0.3 cups of strawberries per student.
Therefore, each student got ⅛ cup of strawberries in their yogurt.