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A total of 375 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?

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There was a total of 375 tickets sold.
The number of student tickets was 2 times the number of adult tickets.

Let's use "x" for the number of student tickets, and "y" for adult tickets.
x + y = 375
But we know that x was 2 times y.
x = 2y

(2y) + y = 375
3y = 375
y = 125

So the answer for this is:
There were 125 adult tickets sold.
The answer would be '125 adult tickets'.