Exercise: Pie Charts

Questions for: Pie Charts

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?
A:
Rs. 36
B:
Rs. 37.50
C:
Rs. 42
D:
Rs. 44.25
Answer: B

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

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What is the central angle of the sector corresponding to the expenditure incurred on Royalty?
A:
15°
B:
24°
C:
54°
D:
48°
Answer: C

Central angle corresponding to Royalty = (15% of 360)°
= ( 15 x 360 ) °
100
= 54°.

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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?
A:
Rs. 19,450
B:
Rs. 21,200
C:
Rs. 22,950
D:
Rs. 26,150
Answer: C

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

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