Question 1035515
Let {{{ x + 250 }}} = number of student tickets sold
Let {{{ x }}} = number of non-student tickets sold
------------------
{{{ 5*( x + 250 ) + 9x = 7018 }}}
{{{ 5x + 1250 + 9x = 7018 }}}
{{{ 14x = 5768 }}}
{{{ x = 412 }}}
and
{{{ x + 250 = 662 }}}
--------------------
662 student tickets were sold
412 non-student tickets were sold
-------------------------------
check:
{{{ 5*( x + 250 ) + 9x = 7018 }}}
{{{ 5*662 + 9*412 = 7018 }}}
{{{ 3310 + 3708 = 7018 }}}
{{{ 7018 = 7018 }}}
OK