A bag contains 21 red marbles, 22 green marbles, 24 orange marbles, and 10 yellow marbles. You choose a marble randomly from the bag What is the approximate probability that you will choose a green or yellow marble?

1 Answer
Mar 8, 2018

32/77

Explanation:

You want to find the probability of picking a yellow or green marble. If we call the yellow and green marbles the desired marbles, we can determine that there are 32 desirable marbles in the bag by adding the amount of yellow and green marbles.
In total, there are 77 marbles in the bag so 32 of the 77 marbles are desirable. By choosing randomly, we will have a 32 in 77 chance to draw a desired marble or in fraction form 32/77