Question

bryan has a bag containing 12 red marbles, 8 blue marbles, 5 green marbles, and 3 yellow marbles, he will randomly select one marble form the bag. what is the probability he will select a red marble?

Answer 1

3/7 or 0.43

You would add all the colors together which would be 28. The you would make a fraction and put the number of red marbles on top. Which would look like this: 12/28
Then you would simply 12/28 by 4 and you would get 3/7. Then if you need it in decimal form it would be 0.43