Question

A bag has 4 yellow marbles and 16 red marbles. Half of the red marbles are made of plastic. A marble is selected at random from the bag. What is the probability that it is a red, plastic marble? write your answer as a fraction in simplest from.

Answer 1

To answer this question, we can draw the information as follows:

As we can see from the drawing, we have that the number of red, plastic marbles to the total of marbles is:

`P=(8)/(20)=(4)/(10)=(2)/(5)`

Therefore, this probability is equal to P = 2/5.