**Directions: (1- 5**) :

**–**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.

**Q1.**If for a certain quantity of books, the publisher has to pay Rs. 30,600 as printing cost, and then what will be amount of royalty to be paid for these books?

**Q2.**What is the central angle of the sector corresponding to the expenditure incurred on Royalty ?

**Q3.**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?

**Q4.**If 5500 copies are published and the transportation cost on them amounts to Rs. 82500, then what should be the selling price of the book so that the publisher can earn a profit of 25%?

**Q5.**what % Royalty on the book is less than the printing cost?

Answer & Explanation

1. : (3)

Let the amount of Royalty to be paid for these books be Rs. r.

Then, 20 : 15 = 30600 : r

r = Rs. 22,950

2. : (3)

Central angle corresponding to Royalty = (15% of 360)º

[(15/100) *360] = 54

3. : (2)

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. 37. 50

4. : (1)

For the publisher to earn a profit of 25%, S.P. = 125% of C.P.

Also Transportation Cost = 10% of C.P

Let the S.P. of 5500 books be Rs. x.

Then, 10 : 125 = 82500 : x.

x = Rs. [(125 x 82500) x 10]= Rs. 1031250

S.P. of one book = Rs. (1031250/ 5500)= Rs. 187.50

5. : (4)

Printing Cost of book = 20% of C.P.

Royalty on book = 15% of C.P.

Difference = (20% of C.P.) – (15% of C.P) = 5% of C.P.

Percentage difference = [ (Difference/Printing) * 100%

= [ ( 5% of C.P./Printing Cost ) x 100%]
= 25%