Question

За 9 днів Оленка прочитала 75% книжки і їй залишилося прочитати ще 54 сторінки. Скільки в середньому сторінок в день читала Оленка? Скільки сторінок у книжці? Скільки днів їй потрібно, щоб прочитати всю книжку, якщо вона читатиме з такою ж швидкістю? ​ 

Answer 1

Ответ:

7 будем точна не знаю атметь как

Лутшее ответ пж

Answer 2

Calculation of Average Pages Read per Day

To calculate the average number of pages read per day by Olenka, we need to determine the total number of pages in the book and the number of days it took her to read 75% of the book.

Given that Olenka read 75% of the book in 9 days and has 54 pages left to read, we can calculate the total number of pages in the book as follows:

1. Calculate the number of pages Olenka read in 9 days: - Let x be the total number of pages in the book. - Olenka read 75% of the book, which is 0.75x pages. - She has 54 pages left to read. - Therefore, the number of pages she read in 9 days is 0.75x - 54 pages.

2. Calculate the average number of pages read per day: - Divide the number of pages read in 9 days by 9 to get the average number of pages read per day. - So, the average number of pages read per day by Olenka is (0.75x - 54) / 9 pages.

Calculation of Total Number of Pages in the Book

To calculate the total number of pages in the book, we can use the information that Olenka read 75% of the book in 9 days and has 54 pages left to read.

1. Set up an equation using the given information: - Olenka read 75% of the book in 9 days, which is 0.75x pages. - She has 54 pages left to read. - Therefore, the equation is 0.75x + 54 = x, where x is the total number of pages in the book.

2. Solve the equation for x: - Subtract 0.75x from both sides of the equation: 54 = 0.25x. - Divide both sides of the equation by 0.25: x = 216. - Therefore, the total number of pages in the book is 216 pages.

Calculation of Number of Days to Read the Entire Book

To calculate the number of days it will take Olenka to read the entire book at the same reading speed, we can use the information that she read 75% of the book in 9 days.

1. Set up an equation using the given information: - Olenka read 75% of the book in 9 days, which is 0.75x pages. - She wants to read the entire book, which is x pages. - Therefore, the equation is 0.75x = x.

2. Solve the equation for x: - Subtract 0.75x from both sides of the equation: 0.25x = 0. - Divide both sides of the equation by 0.25: x = 0. - Therefore, it will take Olenka 0 days to read the entire book.

Summary: - Olenka read an average of (0.75x - 54) / 9 pages per day. - The total number of pages in the book is 216 pages. - It will take Olenka 0 days to read the entire book at the same reading speed.

Please note that the calculations are based on the information provided and may vary depending on the specific context of the problem.