Approximately 2000 tickets are being sold for a car show next Saturday. The cost of a ticket for an adult is $4 and for a child, it’s $2. The total amount collected on Friday was $6400. Find the number of adult tickets and child tickets sold on Friday?

Answer 1

number of adult tickets ---- x
number of children tickets -- 2000-x

solve:
4x + 2(2000-x) = 6400

solve the value of x into my definitions

Answer 2

2800