If Sophia has three stickers for every two stickers that Ethan has.

If Sophia gives Ethan 16 of her stickers, then Ethan will have twice as many stickers as Sophia has.

How many stickers do Sophia and Ethan have all together?

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15