A group of people bought movie tickets at the AMC Century City. They bought a total of 7 tickets, some adults and some kid tickets. They spent a total $72. If adult tickets cost $12 and kid tickets cost $9, how much of each were purchased? Could some one give me the 2 equations for this problem please

A group of people bought movie tickets at the AMC Century City They bought a total of 7 tickets some adults and some kid tickets They spent a total 72 If adult class=