Bar charts, line graphs, and pie charts：練習問題

The following data shows the number of apples sold by a fruit stall from Friday to Sunday: Friday (40), Saturday (75), and Sunday (65). If a bar chart is constructed where each 1 cm on the vertical axis represents 5 apples, what is the height, in cm, of the bar representing the total number of apples sold over these three days?

In a pie chart representing a school's expenditure, the sector for "Books" has an angle of \(72^{\circ}\). If the school spent \$15,000 on Books, what is the total expenditure of the school?

A line graph shows the temperature of a city from 8:00 AM to 12:00 PM. The temperatures are: 8 AM (\(18^{\circ}C\)), 9 AM (\(20^{\circ}C\)), 10 AM (\(23^{\circ}C\)), 11 AM (\(27^{\circ}C\)), 12 PM (\(32^{\circ}C\)). What is the average hourly increase in temperature per hour over this period?

In a bar chart showing the number of books read by 4 classes, Class A read 40 books, Class B read 30 books, and Class C read 50 books. If the average number of books read by the four classes (A, B, C, and D) is 45, how many books did Class D read?

In a pie chart representing the favorite colors of 120 students, the sector for Blue has a central angle of \(108^{\circ}\). How many students chose Blue as their favorite color?

A pie chart shows the distribution of students' favorite subjects in a class. The sectors for 'Mathematics', 'English', and 'Science' are \(120^{\circ}\), \(90^{\circ}\), and \(60^{\circ}\) respectively. If the remaining students chose 'Music', what is the angle of the sector representing 'Music'?

The following data shows the number of cold drinks sold by a shop from Monday to Thursday: Monday (45), Tuesday (60), Wednesday (55), and Thursday (80). If a bar chart is constructed where 1 cm on the vertical axis represents 10 drinks, what is the difference in height, in cm, between the bars for Thursday and Monday?

In a pie chart representing the favorite sports of \(240\) students, the sector for 'Football' has a central angle of \(135^{\circ}\), and the sector for 'Basketball' has a central angle of \(90^{\circ}\). How many more students prefer Football than Basketball?

A pie chart shows the distribution of 1800 books in a library: Fiction (40%), Science (25%), History (20%), and Others.
(a) Calculate the number of History books.
(b) Find the angle of the sector representing 'Others'.
(c) If 120 more Science books are added, what will be the new percentage of Science books in the library? (Round your answer to one decimal place)