Okay, we need two equations for this: a will represent adults, and k, kids a + k = 168 a = 168 - k 300a + 150k = 43200 Replace a: 300(168-k) + 150k = 43200 50400 - 300k + 150k = 43200 -150k = -7200 15k = 720 k = 48 168 - 48 = 120 46 children and 120 adults attended
