Answer:
1/3
Explanation:
There are 12 balls in Box A 5 of them are green which means the probability drawn a green ball from Box A is 5/12, and 12 balls in Box B means the probability drawn a green ball from Box B is 3/12, the probability of selecting Box A is 1/2, same as Box B so that the answer will be 1/2×5/12 + 1/2×3/12 = 1/3
