A total of 411 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student tickets sold was two times the number of adult tickets sold. How many adult tickets were sold?
Let x be the number of adult tickets sold.
Therefore, the number of student tickets sold would be 2x.
The total number of tickets sold is x + 2x = 3x.
Given that a total of 411 tickets were sold,
3x = 411
x = 137
Therefore, 137 adult tickets were sold.