Some tourists return to the same country several times in the same year. In 2000, it was noted that 80% of tourists made a single trip to the country, 15% came twice, and 5% came at least three times. How many individual tourists visited Italy in 2000.
(Table shows "Tourists statying at least one night when visiting Italy": 22 800 000.)
The Attempt at a Solution
x = 22800000/(.8+2*.15+3*.05) = 18 240 000.
So I'd say there were up to 18 240 000 individual tourists. But the question, a multiple choice question, doesn't have anything close to this option. Am I overlooking something, or misinterpreting it? Could there be a typo?