A bag contains only red, green, brown and yellow marbles.
The probabilities of selecting each colour are shown below.
Colour Red Green Brown Yellow
Probability 5x 2x 3x 4x
Find the probability of selecting a yellow marble.
Find the probability of selecting a yellow marble.= 4/13
A bag contains only red, green, brown and yellow marbles.
The probabilities of selecting each colour are shown below.
Colour Red Green Brown Yellow
Probability
6x red
2x green
x brown
4x yellow
Find the probability of selecting a yellow marble.
To find the probability of selecting a yellow marble, we need to know the values of x for each color. Since the probabilities are given in terms of x, we can set up the following equation:
5x + 2x + 3x + 4x = 1
Combining like terms, we get:
14x = 1
To solve for x, we divide both sides of the equation by 14:
x = 1/14
Now that we know the value of x, we can find the probability of selecting a yellow marble:
Probability of selecting a yellow marble = 4x
Substituting x = 1/14, we get:
Probability of selecting a yellow marble = 4 * (1/14) = 4/14 = 2/7
Therefore, the probability of selecting a yellow marble is 2/7.