Answer:
P(green) = 2/3
P(purple) =2/9
P(orange) =1/9
12 green marbles
4 purple marbles
2 orange marbles
The sum of all probabilities is 1
Step-by-step explanation:
P(green) = 2/3
P(purple) =2/9
To find orange get a common denominator
2/3 *3/3 = 6/9
6/9+2/9 = 8/9
The remaining 1/9 are orange
P(orange) =1/9
2/3 *18 = 12 so there are 12 green marbles
2/9*18 = 4 purple marbles
1/9*18 = 2 orange marbles
The sum of all probabilities is 1