Question 36939
X+2X+S=405 OR 3X+S=405 OR S=405-3X & 

800X+450*2X+600S=232000 SUBSTITUTING 405-3X FOR S WE GET

800X+450*2X+600(405-3X)=232000 OR 800X+900X+243000-1800X=232000 OR

1700X-1800X=-11000 OR -100X=-11000 OR X=110 THEN 2X=220 & S=405-3*110 OR 

S=405-330 OR S=75 OR 800*110+450*220+600*75=232000 OR 

88000+99000+45000=232000 OR 232000=232000

THEREFORE THERE WERE 110 ADULT TICKETS, 220 CHILDREN TICKETS & 75 SENIOR TICKETS