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:
68 comments Page 4 of 7.

Stephen bisto said:   1 decade ago
Please answer me S.P is it principle or constant that is 120 and C.P is 180 please help me about this number.

Aditya Ganjoo said:   1 decade ago
If I deduct 20% from the marked price, I get the CP. That is 20% of 180 = 144.

Now, 25% of CP is the paper cost. That is 144/4 = 36. Tell me how is that wrong?

Keyur said:   10 years ago
I also face the same problem but after reading carefully I understood that.

1) Marked 20% above the C.P.

2) Marked price (SP) of the book is Rs. 180.

Now SP = 120% of C.P. That not 20% of 180 but 120% of C.P = 180.

25% of C.P = X.

So by taking ratio 37.5.

Shadab Akhtar said:   9 years ago
Formula,

S.P = {(100 + gain%)* CP}/100.
C.P = (100 * SP)/100 + gain%.

Given,
S.P = 180.
Gain% = 20.

Therefore C.P = (100 * 180)/100 + 20.
=> 18000/120.
=> 150.

25% of C.P = (25 * 150)/100.
=> 37.5.

Vinothraj said:   9 years ago
Cost of paper = 25% of CP . How it will comes? Please explain it.

Navi said:   9 years ago
Is mp = sp? Explain.

Ushodaya said:   9 years ago
@Crazysatish.

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

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

Harishankar said:   9 years ago
@Manu.

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

Catherine said:   9 years ago
120= 180,
1 = 1.5,
25 = 25x1.5 = 37.5.
(short answer)
(1)


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