Question 387388
  <pre><font size = 3 color = "indigo"><b>
Hi, 
 270 tickets were sold       
Let x and (270-x) represent the number of adult and student tickets respectively
Question States***
 $6*x + $4.50(270-x) = $1590
solving for x
  6x + 4.50*270 - 4.50x = 1590
       1.50x = 1590 - 1215
       1.50x = 375
           x = 250, the number of adult tickets.  Student tickets = 20

CHECKING our Answer***
   $6*250 + 20*$4.50 = $1590