A bag of marbles contains 5 red, 12 blue and 5 yellow. What is the ratio of red marbles to non red marbles?
5/17
Non red marbles are 12 + 5 = 17.
So the ratio is 5/17.
A Bag contains 3 blue marbles, 2 red marbles, and 4 green marbles. Mark reaches in and randomly selects a marble. He replaces it, and randomly selects another. What is the probability that both marbles were the same color? What is the probability that 1 was red and the other was green?
To find the ratio of red marbles to non-red marbles, we first need to determine the number of non-red marbles.
In this case, the non-red marbles would include both the blue and yellow marbles.
So, to find the ratio, we can divide the number of red marbles by the number of non-red marbles.
The number of red marbles is 5, and the number of non-red marbles is 12 (blue) + 5 (yellow), which equals 17.
Therefore, the ratio of red marbles to non-red marbles is 5:17.