To find the percentage of white marbles Arvind has, we need to know both the number of white marbles and the total number of marbles.
Statement I tells us only the combined number of blue and green marbles (7), but not the total or the white ones - not sufficient.
Statement II gives both total marbles (10) and white marbles (3), which is enough to calculate the percentage (3/10 X 100 = 30%).
So, the correct answer is: option 1 Data in Statement II alone is sufficient to answer the question while data in Statement I is not.
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