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1 . Study the following table carefully to answer the given questions.
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What is the respective ratio of the total number of books sold through Online Mode in the years 2010 and 2011 together and the total number of books sold through offline mode in the same years together ?
[ A ]    25 : 32
[ B ]    24 : 25
[ C ]    23 : 24 right
[ D ]    35 : 36
[ E ]    25 : 28
Answer : Option C
Explanation :
Number of books sold through offline mode in the years 2010 and 2011
= (414 + 306) thousands
= 720 thousands
Number of books sold through online mode
= (690 + 720 - 720) thousands
= 690 thousands
Required ratio
= 690 : 720
= 23 : 24

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