Question

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?

Answer 1

The answer is 25 because 20% of 25 is 5

Answer 2

Set it up as a proportion.

5 / x = 20 / 100
20x = 500
x = 25

There are 25 students in the class.