Question 706466
Let 'x' be the number of weekday tickets and 'y' be the number of weekend tickets

Total number of tickets = {{{x + y =6}}} ----------------eq.1
Cost of weekday ticket = $18
Cost of weekend ticket = $21

Total cost = $114

18x + 21y = 114 Divide the expression by 3

{{{6x + 7y = 38}}} --------------------------------------eq.2

Solving eq.1 and 2, we get

y = 2 and x = 4