Answer:
34.28 percent of the items in the bag are DVDs
Explanation:
Given that he had following items
DVDs 12
MArbles 12
Books 11
Total items are: 11+12+12 = 35
In order to find the percentage of DVDs we have to divide the quantity of DVDs by total and multiply by 100
So,
Percentage of DVDs is:

Hence,
34.28 percent of the items in the bag are DVDs