Question: 1 -
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 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?
-
Rs. 21,200
-
Rs. 22,950
-
Rs. 26,150
-
Rs. 19,450
Answer:
Rs. 22,950
Solution:
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.
20
Let the amount of Royalty to be paid for these books be Rs. r.
Then, 20 : 15 = 30600 : r ![]() |
![]() |
30600 x 15 | ![]() |
= Rs. 22,950. |
20 |
Question: 2 -
What is the central angle of the sector corresponding to the expenditure incurred on Royalty?
-
54°
-
15°
-
24°
-
48°
Answer:
54°
Solution:
Central angle corresponding to Royalty
= (15% of 360)°
=

15
x 360

°
100
= 54°.
Central angle corresponding to Royalty | = (15% of 360)° | |||||||
|
||||||||
= 54°. |
Question: 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?
-
Rs. 37.50
-
Rs. 42
-
Rs. 44.25
-
Rs. 36
Answer:
Rs. 37.50
Solution:
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 .
120
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 ![]() |
![]() |
25 x 180 | ![]() |
= Rs. 37.50 . |
120 |
Question: 4 -
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%?
-
Rs. 175
-
Rs. 180
-
Rs. 191.50
-
Rs. 187.50
Answer:
Rs. 187.50
Solution:
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

= Rs. 1031250.
10
S.P. of one book = Rs.

1031250

= Rs. 187.50 .
5500
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 ![]() |
![]() |
125 x 82500 | ![]() |
= Rs. 1031250. |
10 |
![]() |
![]() |
1031250 | ![]() |
= Rs. 187.50 . |
5500 |