Answer:
tickets were sold to student and
tickets were sold to adults
Step-by-step explanation:
Let the number of tickets purchased by students be "X" and the number of tickets purchased by adults be "Y"
Given
Total number of tickets sold

Total amount collected by selling
tickets
dollar
Cost of one ticket of student
dollar
Cost of one ticket of adult
9 dollar
Two equation are as follows
------Eq (1)
-------- Eq (2)
Multiplying eq (1) by 9 and subtracting from equation 2 we get

Substituting the value of X in equation 1 we get

Therefore,
tickets were sold to student and
tickets were sold to adults