Tom keeps all of his favorite marbles in a special leather bag. Right now, five red marbles, four blue marbles, and yellow marbles are in the bag.

If he randomly chooses one marble to give to a friend what is the probability that it is blue ?

4/12

Hey fellow student! The total number of marbles is 12. Because:

5 red marbles + 4 blue marbles + 3 yellow marbles = 12 total marbles
And there are 4 BLUE marbles in his special leather bag . . .
So the probability of a blue marble would be 4/12. The reason why is because there are 4 TOTAL blue marbles and there are 12 TOTAL marbles.
Hope this helps!

To find the probability of Tom choosing a blue marble, we need to know the total number of marbles in the bag.

In this case, Tom has a total of 5 red marbles, 4 blue marbles, and some yellow marbles. However, the number of yellow marbles is not specified.

Let's assume there are 'n' yellow marbles in the bag.

The total number of marbles in the bag, denoted as 'total', can be calculated by summing up the number of red, blue, and yellow marbles:

total = number of red marbles + number of blue marbles + number of yellow marbles
total = 5 (red marbles) + 4 (blue marbles) + n (yellow marbles)

Since the number of yellow marbles is unknown, we cannot determine the specific value of 'total'. Therefore, the probability of Tom choosing a blue marble cannot be determined without knowing the number of yellow marbles.

If you have additional information about the number of yellow marbles in the bag, please provide it, and I will be happy to help you calculate the probability.

How many yellow marbles are in the bag?

4/(5+4+y)

1011