Are at least 20% of the people in City X who are 30 years old or older bilingual? (M.A.T., 2006) I. In City X, 30% of the population is at least 30 years old. II. In City X, of the population 30 years old or older, 18 percent of the women and 17 percent of the men are bilingual.
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.