All 60 students in the seventh grade must choose a fall sport in which they will participate. 1/4 of them choose volleyball, 30% of them choose soccer, and the remainder choose softball. how many students choose softball?

Can someone me and do the problem plz so i can understand it more better

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

70 points ! pls 2. given the following two sets of data what is the union of the two sets and what is the intersection of the two sets. set a = {1, 2, 3, 4, 5, 6, 7, 8, 9} set b = {2, 4, 6, 8, 10, 12, 14} 3. given a regular deck of cards. describe a way of pulling cards that would create a dependent event and then one that would create an independent event. 4. what is the probability of drawing a red card and then drawing a spade without replacing the card that was drawn first?