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?
80. There are 8 red marbles out of 50. That is a percentage of 0.16, or 16%. Then, if there are 500 trials, find 16% of 500 by multiplying 500 times 0.16
