The following pie chart below shows the expenditure in book publishing by a publisher under various heads. Given that marked price of a book is ₹270, what is the cost of paper to publish a single copy of the book if the marked price of a book is 20% more than its cost price?
₹56.25
The cost price of the book is ₹270 / 1.2 = ₹225. The cost of paper is 25% of the cost price, which is 0.25 × ₹225 = ₹56.25.
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