Answer:
22 students
Step-by-step explanation:
Given,
Total number of students = 40,
∵ Number of students who play viola = of the total students
=
= 10
Also, number of students who play cello = of the total students
=
= 8
So, the remaining students = total students - students who play viola - students who play cello
= 40 - 10 - 8
= 22
Hence, 22 students play violin.