Sunny side library has three times as many books as creek side library. the libraries have an average of 3,840 books. how many books does sunnyside library have?

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

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?

How do you solving the solution of each system using elimination?