Word Problem

Question

A bag has 2 red marbles and 16 green marbles. Half of the green marbles are made of glass. A marble is selected at random from the bag. What is the probability that it is a green, glass marble? Write your answer as a fraction in simplest form.

Answer 1

P{A green, glass marble selected}

= P{The marble is made of glass|The marble is green}P {A green marble is selected}

= (0.5)(16/18)

=4/9

 

This problem uses conditional probability.