Question

Tourists from a tour bus were asked about places they visited during their stay in a city. The results are shown in the table.

Answer 1

So I added all of the numbers of tourists together, I got 30 tourists. Then I saw that the number of tourists that visisted the museum but not the zoo was 5. I divided 5 by 30 and got that there was a 16% chance that a randomly selected tourist would of visited the museum but NOT the zoo. 
Hope this helps!
~Lizzie