In 1985 the city’s Fine Arts Museum sold 30,000 single-entry tickets. In 1986 the city’s Folk Arts and Interior Design museums opened, and these three museums together sold over 80,000 such tickets that year. These museums were worth the cost, since more than twice as many citizens are now enjoying the arts.
Which of the following, if true, most seriously weakens the author’s assertion that more than twice as many citizens are now enjoying the arts?

Question

Examsnet · Accepted Answer

Correct Answer is :  Most visitors to one museum also visit the other two.

GMAT Verbal Reasoning Practice Test 5