Tickets to a sporting event cost $6 for children and $8 for adults. The total revenue from the tickets sold was $2340. There were 320 total tickets sold.

How many children’s tickets were sold?

2 answers

c + a = 320

6c + 8a = 2340

8c + 8a = 8(320)

2c = 8(320) - 2340
110 children's tickets were sold and 210 adult tickets were sold. Using the first 2 equations set up by Scott & ignoring the last 2 steps, I used substitution to solve for c "the number of children's tickets sold.

6c+8(320-c)=320

6c+2560-8c=320

-2c+2560=320

-2c=-220

c=110