How many students and how many adults attached the carnival?

Question

tickets to the school carnival costs $2 for students and $5 for adults. on friday, 142 people attended the carnival. the school collected $434 from tickets sales. how many students and how many adults attached the carnival?

Answer 1

2S + 5A = 434

S + A =142

S = 142-A

2(142-A) + 5A = 434

282-2A +5A = 434

3A = 434 -142 = 282

A = 282/3 = 94

S = 142-94 = 48