Question

A bag contains 3 blue marbles, 7 red marbles, and 5

yellow marbles. If Joe picks 1 marble from the bag at
random, what is the probability that it will be blue?

Answer 1

3 out of 15 I believe is the answer

Explanation:

there are 3 blue marbles so he already has a chance out of 3, then I believe you add them all together which is 15 :) hope this helps