A total of 429 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? adulttickets

Let's say adult tickets = x and student tickets = y

(1) x + y = 429

The number of student tickets sold is twice the number of adults tickets sold, therefor y = 2x

Now if we substitute this into equation (1), we get:

x + 2x = 429

3x = 429

x = 143

Therefor the number of adult tickets sold is 143