Study the following pie diagrams and answer the question.
To determine the ratio of Postgraduate (PG) students to Undergraduate (UG) students in college C, we need the specific counts for each student category within that college.
From the available data for college C:
The ratio of PG students to UG students is expressed by comparing the number of PG students directly against the number of UG students.
Let $N_{PG}$ denote the number of PG students and $N_{UG}$ denote the number of UG students.
The ratio is represented as $N_{PG} : N_{UG}$.
Using the counts for college C:
$ \text{Ratio} = 416 : 355 $
Therefore, the ratio of PG students to UG students in college C is 416:355.
The given pie chart shows the viewers watching different types of channels on TV.
Assuming that the TV watching population is 10,000 people, by what percentage would Sports Channels have to grow their viewership in order to equal the current viewership of the Entertainment channels?
The given pie-diagram shows the expenditure incurred on the preparation of a book by a publisher, under various heads. Study the pie-diagram and answer the question that follows.
Various Expenditures (in percentage) incurred in Publishing a Book

The marked price of a book is 20% more than the CP. If the marked price of the book is ₹30, then what is the cost of paper used in a single copy of the book?
Study the given pie-charts and answer the question that follows.
The pie-charts show the characteristics of foreign tourists visiting India during a given year.

If in a given year, 2,50,000 tourists visited India and the age-wise distribution of data applies to all the countries, then the number of Russian tourists who visited India during the year and were in the age group above 50 years is:
A battery manufacturer manufactures five different types of batteries. The total revenue for the year 2020 is Rs.25,00,000, and 20,000 units were exported in 2020. The distribution of revenue and units for the five different types of batteries is shown in the charts.

Which type of battery provides the lowest revenue per unit?
What type of chart is used to compare parts of a whole in MS-Excel?
The average of two numbers is M. If one number is N, then the other number is: