Abrick stair case has a total of 40 steps. the bottom step requires 88 bricks. each successive step requires two less bricks than the prior step. how many bricks are required for the top step?

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?