Answer with explanation:
From the given picture , it can be seen that the ratio of the fruits to the vegetables is 5:7
Let x be the number of vegetables corresponds 30 fruits for Monkey A.
Then , by using proportional relationships between fruits and vegetables , we have :-

So, the number of vegetables for Monkey A = 42
Let y be the number of vegetables corresponds 70 vegetables for Monkey B.
Then , we have :-

So, the number of fruits for Monkey B = 50