A bag contains 12 red, 3 blue, 6 green, and 4 yellow marbles. If a marble is drawn from the bag at random, what is the probability that the marble will be either blue or yellow?


Add the number of marbles to get the total number in the bag; 12 + 3 + 6 + 4 = 25. Therefore, 25 is the number of possible outcomes. Seven marbles are either blue or yellow. Seven is the number of favorable outcomes;\(\frac{7}{ 25} \times \frac{4 }{4}=\frac {28}{100}=28 \%\)

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