Study the given pie chart and answer the question that follows. The pie chart shows the percentage-wise distribution of teachers who teach six different subjects. Total number of teachers = 1600 If three-eighth of the teachers who teach Chemistry are females, then the number of male Chemistry teachers is what percentage of the total number of teachers who teach Biology?
75%
Calculation:
Total number of Chemistry teachers = 1600 × (18/100)
⇒ 288
Number of female Chemistry teachers = 288 × (3/8)
⇒ 108
So, male Chemistry teacher = 288 - 108
⇒ 180
Total number of Biology teachers = 1600 × (15/100)
⇒ 240
Required % = (180/240) × 100
⇒ 75
∴ Required answer is 75%.
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: