Number in squence

5,20,10,30,15,40

and say how did you do it

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?

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64