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.

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

CHIRU KAGANI said:   6 years ago
If 120% cost is 180.
for 100%?
100/120 * 180 = 150.
25% of 150 IS 37.5.

Nachiket said:   6 years ago
I am not understanding this, Can someone explain, please?

Bhargava said:   6 years ago
If profit is 1/5 of Cost price mean 1/6 of selling prince. i.e
profit on Selling price 180*(1/6)=30, then the cost price is 150*25% = 37.5.

Anmol said:   5 years ago
120 : 25, why we need to divide CP1/CP2?

Siddharth said:   1 decade ago
180 is the selling price of the book. It includes the cost price of the book as well as the profit made on the book which is 20% of the cost price of the book. Together they make 180.

SUDHEER NAG said:   1 decade ago
180*100/120 = 150.
150*25/100 = 37.5

Pooja said:   1 decade ago
Here 1st we need to find the cost price to find printing cost,
It is printing cost = (25*cp)/100.

We have formula for finding cp = (100*sp)/(100+gain%)
=(100*180)/(120)
=150

Therefore printing cost=(25*150)/100
=37.5

Prabhat ojha said:   1 decade ago
If the cost of paper is 20% of above it mean that = 100+20=120
So 120:25::180:x x=25*180/120=37.

Shan296 said:   1 decade ago
Please anyone tell me that why the calculations are based on sp?

Can I use cp for calculation?


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