A bag contains only red, green, brown and yellow marbles. The probabilities of selecting each colour are shown below. red=5x green=2x brown=3x yellow=4x Find the probability of selecting a yellow marble. P(Yellow)=?

28.57%

Step-by-step explanation:

In order to find the probability of selecting a yellow marble we first need to calculate the total number of marbles in the bag. We do this by adding the number of individual colored marbles together.

5 + 2 + 3 + 4 = 14 total marbles

Now that we have the total number of marbles in the bag we need to divide the number of yellow marbles by this total to get the probability in decimal form.

4 (yellow) / 14 (total) =  0.2857

Now we need to multiply this decimal by 100 to get the percentage probability.

0.2857 * 100 = 28.57%

Finally, we can see that the probability of selecting a yellow marble is 28.57%

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step-by-step explanation: