Question

a bag has 6 yellow marbles and 6 brown marbles. half of the brown marbles are made of plastic. a marble is selected at random from a bag. what is the probability that is is a brown, plastic marble! write your answer as a fraction is simplest form

Answer 1

Probability = (number of successful selections) / (total possible selections)

Number of successful selections: 3 (the brown plastic marbles)

Total possible selections: 12 (all the marbles in the bag)

Probability = 3/12

In simplest form: 1/4 .