In the following questions each question is followed by data in the form of two statement labelled as I and II. You must decide whether the data given in the statements are sufficient to answer the questions.
By how many years is Aswani younger than her brother Sanjay?
I. The ratio of Aswani's present age to that of Sanjay after 3 years is 7:9
II. The ratio of Aswani sage three years ago to Sanjay's present age is 1:2
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