Question

A bag contains 8 whit balls, 5 green balls, 7 blue

balls, and 10 black balls. If a single ball is
picked at random from the bag, what is the probability
that the ball is either a black or a white ball?

I need help I got 3/5 but the choice on my paper show 2/15 1/11 9/32 5/18

Answer 1

Answer:
`(3)/(5)`

Explanation:

There is a total of 8 + 5 + 7 + 10 = 30 balls. There is 8 + 10 = 18 black or white balls. 18 / 30 simplifies to
`(3)/(5)`.