Question 172539
# of Adult tickets = {{{a}}}
# of student tickets ={{{s}}}
(1) {{{a + s = 744}}}
(2) {{{8.5a + 5.5s = 4527}}}
Multiply (1) by {{{5.5}}} and subtract from (2)
{{{8.5a + 5.5s = 4527}}}
{{{5.5a + 5.5s = 4092}}}
{{{3a = 435}}}
{{{a = 145}}}
{{{a + s = 744}}}
{{{s = 599}}}
There were 145 adult tickets sold
and 599 student tickets sold