Ninety students auditioned for the school play. One-third of those who auditioned were cast, 6 in major roles. What fraction of those were cast got major roles? Write your answer as a decimal

Answer 1

One-third of the 90 students are 90/3=<<90/3=30>>30 students.
So, 6/30=1/5 of those who auditioned got major roles.
Since 1/5 expressed as a decimal is 0.2, then the answer is \boxed{0.2}.