It takes 2/3 hour to pick all the apples on one tree at Springwater Farms. There are 24 trees. How long will it take to pick all the apples?

Can someone me with these two circle theorem questions asap?

Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano

Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.