Erica runs a daycare center. So far this year, the enrollment has consisted of 3 babies and 12 children of other ages. Considering this data, how many of the next 20 children to enroll should you expect to be babies?
3 out of the 12 babies is equal to 1/4 of the babies so assuming the ratio of babies to children of other ages stays the same you'll need to find 1/4 of 20 which is 5.