Data Interpretation - Pie Charts - Discussion

Discussion Forum : Pie Charts - Pie Chart 1 (Q.No. 3)
Directions to Solve

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


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. 36
Rs. 37.50
Rs. 42
Rs. 44.25
Answer: Option
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 .
120

Discussion:
69 comments Page 3 of 7.

Rohit687 said:   9 years ago
20% above marked means c.p.=180-(180.20/100).
So the c.p. is = 144.
Now 25%(cost of paper in c.p.) of 144=144.25//100 = 36.

Then why answer is given as 37.5?

Manish chauhan said:   9 years ago
SP = 20% above the c.p.

Let x is original price of the goods.

Now,
x+20/100 * x = 180,
x+1/5 *x = 180,
6x = 900,
x =150,
Then,

150 * 25/100 = 36.50.

Harishankar said:   9 years ago
@Manu.

25% came from pie chart. Please look into the diagram and question.

Sam said:   9 years ago
Isn't the marked price 20% and not 120%?

Ushodaya said:   9 years ago
@Crazysatish.

I agree with you. Your answer is easy to understand.

Ami said:   8 years ago
@Sam thanks.

Your explanation helped me alot.

Sushmitha said:   8 years ago
Can anyone explain me this to me?

Sai krishna said:   8 years ago
Given data,
Sp=180
Mp(or) sp = 120% of cp

Then;
180=(120/100)*cp.
Therefore, Cp = 150,
From pie chart paper cost = 25% of Cp.
= (25/100)*150.
= 37.5.

Aniket said:   7 years ago
The marked price is 180..which is 20% above the C.P.

To find the C.P=180*20/100= 36.
C.P.= 180-36=144.

Why I am not getting the correct answer? Please tell me.

Kavin said:   7 years ago
How 120 comes? Please explain it.


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