Answer:
40%
Explanation:
We Know
A bag of cotton has 10 red marbles and 15 green marbles.
10 + 15 = 25 marbles total
If you can use Lexi marble from the bag without looking, what is the probability that she will pull out a red marble?
We Take
(10 ÷ 25) x 100 = 40%
So, the probably that she will pull out a red marble is 40%