Answer:
6/18 or 6/12
6:18 6:12
Step-by-step explanation:
I put 18 on the denominator because I see 18 as a total. Also, there is another answer that may work if the first one isn't accurate for you.
Because I found out the missing number of ripe plums, which is 12.
Since the question didn't ask for the missing number, I'll stick with the first answer I got.