Question

a jar contains green,red,and blue marbles.The probability of choosing a blue marble is 1/3, the probability of choosing a red marble is 1/2,the probability of choosing a green marble is 1/6.If there are 12 marbles in the jar,and then three green marbles are added,what is the new probability of choosing a red marble from the jar?

Answer 1

Three green marbles have been added. There are still 6 red marbles out of a total of 15. Do the numbers.

6/15 = ?