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Vinoth purchases 18 books for \(₹\)276 and Sheela purchases 10 books for \(₹\)253. Calculate who bought the book costlier and also find out how much amount they both spent on buying one book.
Vinoth purchases one book for an amount of \(₹\).
Sheela purchases one book for an amount of \(₹\).
bought the book Costlier.
[Note: Submit the answer as a whole number].
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