The given pie-diagram shows the expenditure incurred on the preparation of a book by a publisher, under various heads. Study the pie-diagram and answer the question that follows.
Various Expenditures (in percentage) incurred in Publishing a Book
The marked price of a book is 20% more than the CP. If the marked price of the book is ₹30, then what is the cost of paper used in a single copy of the book?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. ₹5.
The marked price of a book = 20% more than the CP
The marked price of the book (MP) = ₹30
Let the CP of the book = x
So, 120x/100 = 30
⇒ x = 30 × (100/120) = ₹25
Expenditure on paper = (20/100) × 25 = ₹5
Therefore, the cost of paper used in a single copy of the book is ₹5.