You can
put this solution on YOUR website!a= # of adults s= # of students so 3a+2s=824 and a=2s so substituting a in the second equation ,into the first equation we get 3(2s)+2s=824 so 8s=824
and s=103 so since a=2 times s(103) then a =206
answer: 206 adult tickets and 103 student tickets were sold.