A bag contains 50 marbles, 10 of which are blue, 8 are red, 20 are green, and 12 are purple. Marcie takes a marble out of the bag, records the color, and returns it to the bag. How many red marbles should she expect after 500 trials?
The reason it would be 80 is because their are 8 red marbles so doing one trial it would be a 8/50 chance. if you add a zero to both that gives you your answer.
