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
| 1. |
If for a certain quantity of books, the publisher has to pay Rs. 30,600 as printing cost, then what will be amount of royalty to be paid for these books?
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| A. | Rs. 19,450 | B. | Rs. 21,200 |
| C. | Rs. 22,950 | D. | Rs. 26,150 |
Answer: Option C
Explanation:
Let the amount of Royalty to be paid for these books be Rs. r.
Then, 20 : 15 = 30600 : r  r = Rs. |  | 30600 x 15 |  | = Rs. 22,950. |
| 2. |
What is the central angle of the sector corresponding to the expenditure incurred on Royalty?
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Answer: Option C
Explanation:
| Central angle corresponding to Royalty | = (15% of 360)º |
|
| = | | 15 | x 360 | | º |
| 100 |
|
| = 54º. |
| 3. |
The price of the book is marked 20% above the C.P. If the marked price of the book is Rs. 180, then what is the cost of the paper used in a single copy of the book?
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Answer: Option B
Explanation:
Clearly, marked price of the book = 120% of C.P.
Also, cost of paper = 25% of C.P
Let the cost of paper for a single book be Rs. n.
| Then, 120 : 25 = 180 : n n = Rs. | | 25 x 180 | | = Rs. 37.50 . |
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