Do you guys know the answer?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

What are different types of statistical programs