Answer:
150 adult tickets, 80 student ticket and 48 senior tickets.
Explanation:
Given:
A theater has tickets priced at $6 for adults, $3.50 for students, and $2.50 for seniors.
A total of 278 tickets were sold for one showing with a total revenue of 1300.
If the number of adult tickets sold was 10 less than twice the numbers of student tickets.
Question asked:
How many of each type of ticket were sold?
Solution:
Let the number of students tickets sold =

Then the number of adult tickets sold =

Then the number of senior tickets sold =

Total revenue = $1300

The number of students tickets sold =
= 80
The number of adult tickets sold =
=

The number of senior tickets sold =

Therefore, 150 adult tickets, 80 student ticket and 48 senior tickets are sold.