Question 47632
adult tickets: a
child tickets: c
{{{a + c = 27}}}
{{{20a + 16c = 464}}}
Combine:
{{{-20a - 20c = -540}}}
+
{{{20a + 16c = 464}}}
=
{{{-4c = -76}}}
{{{c = 19}}}
Plug:
{{{a + c = 27}}}
{{{a + 19 = 27}}}
{{{a = 8}}}
While eight adult tickets were sold, nineteen childeren's tickers were sold as well.