Mrs. conley asks her class what kind of party they want to have to celebrate their excellent behavior. out of all the students in the class, 5 want an ice cream party, 7 want a movie party, 10 want a costume party, and the rest are undecided. if 20, percent want an ice cream party, how many students are in the class?

So let's just say "x" is our variable that represents the total number of students in the class. We know that 5 is 20% of x. We can also understand that 0.20x = 5. So 0.20x divided by 0.20 gives us the remaining variable, x. If we do that, we also need to divided the other side by 0.20, so 5 divided by 0.20 is 25. The There are 25 students in Mrs. Conley's class.

X= 2 he can buy 2 packs of cards for $12 and an action figure for $3 so he would spend $15 in total plus the free poster