A bag contains 10 black, 15 white, and 25 blue marbles. What is the probability of randomly selecting one marble that is NOT black?

Question

asked Dec 6, 2022 42.8k views

1 Answer

Tony Peng · Answer 1 · 2022-12-12T14:55:53+0000

Answer: 0.8 or 80%

Explanation:

First find the total number of marbles:

10 + 15 + 25 = 50 marbles total

To find the number of marbles that are not black:

15 + 25 = 40 marbles that are not black

Set up ratio:

(40)/(50) = 0.8 or 80%