Answer the questions below with explaining please

4- The following pie-chart shows the percentage distribution of the expenditure incurred in publishing a book. Study the pie-chart and the answer the questions based on it. Various Expenditures in percentage) Incurred in Publishing a Book Promotion Cost 10% Transportation Cost Royalty Printing Cost 10% 20% 15% Binding 20% Paper Cost 25% 1. If for a certain quantity of books, the publisher has to pay AED 30,600 as printing cost, then what will be amount of royalty to be paid for these books? 2. What is the central angle of the sector corresponding to the expenditure incurred on Royalty? 3. If 5500 copies are published and the transportation cost on them amounts to AED 82500, then what should be the selling price of the book so that the publisher can earn a profit of 25%? 4. Royalty on the book is less than the printing cost by how many percentage