Refer to the graph and answer the given questions.
Data related to number of books purchased for two libraries (A and B) during 6 years
What is the average number of books purchased for library A during 2004, 2005, 2007 and 2008 ?
Average number of books purchased for library A during 2004, 2005, 2007 and 2008=$$\frac{160+380+760+520}{4}$$.
=455.
Therefore, Option B is correct.
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