Devaughn is 15 years younger than Sydney. The sum of their ages is 53. What is Sydney's age?

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?

In the diagram of circle o, what is the measure of zabc?

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?