A bag contains and 9 metal balls, 10 hollow balls, 4 glass balls and 18 plastic balls. What is the probability of choosing a glass or hollow ball?

1. 35.4%
2. 34.1%
3. 24.6%
4. 38.9%

Respuesta :

2, 34.1%, since after you add all them up and create a fraction then convert it into a decimal then multiply it by 100 it becomes 34.1