mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is £6 more than the cost of a normal ticket. the total cost of the 6 tickets is £40.50.

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?