Question 170346
lets call rons tickets(student tickets) s and lets call kathy's tickets(adult tickets) a.
:
s+a=30.............eq 1--->a=30-s
2s+5.50a=105.50....eq 2
:
take a's value in eq 1 and plug it into eq 2
:
2s+5.50(30-s)=105.50
:
2s-165-5.5s=105.50
:
3.5s=59.5
:
{{{highlight(s=17)}}}amount of tickets Ron sold