Gary gets 4 marbles, because 12/3 is 4. So for the ratio 3:1 to apply, Jo gets 12 marbles and Gary gets 4.
Answer: 4
Step-by-step explanation: The 3:1 tells you that for every 3 you are going to have a 1 so when jo has 12 that means that there are three 4's so gay has 4
think the answer is d
Answer:
not really sure maybe 12