Final answer:
To find out how many student tickets were sold for the concert, we can set up an equation using the given information. 15 student tickets were sold for the concert.
Step-by-step explanation:
To find out how many student tickets were sold, we can set up an equation using the given information. Let's call the number of student tickets sold 'x'. The number of general admission tickets sold is given as 50. So, the equation becomes:
50 - x = 35
Simplifying the equation, we get:
x = 50 - 35
x = 15
Therefore, 15 student tickets were sold for the concert.