Answer:
Explanation:
In the first box, there should be 3 green marbles and 5 blue marbles. 3 for every 5.
In the second box, there should be 5 green marbles and 3 blue marbles. 5:3 would mean 5 against 3.
In the third box, there should be 3 green marbles and 2 blue marbles. This is because out of 5, there are 3 green, and 2 blue are left.