A book has a page, read 15 pages a day, and finish it in a week

2024-09-16 12:57

1 answer

2024-09-16 14:41

A book has a page A. Reading 15 pages a day in a week is just enough. Assuming a book has page A and 15 pages a day, the number of days needed to finish the book in a week is: a ÷ 15 = (a + a) ÷ 2 = 2a / 2 + a / 2 Transferring items can be sorted out: 2a / 2 = a + a / 2 To simplify it: a = 4 Therefore, a book had four pages, and 15 pages a day was just enough to finish it in a week.

A book had a total of 95 pages. Xiao Hong read 13 pages a day. Could she finish it in a week?

1 answer

2024-09-14 20:22

No. He read 13 pages a day for a total of seven days a week. Therefore, Little Red needed 7 * 13 = 91 pages to complete the reading mission for a week. However, a book has a total of 95 pages, so Little Red needs to read 91 pages.

Ming has a 170-page book. He read 80 pages in the first 4 days. If he wants to finish reading it in a week, how much should he read every day from the fifth day?

1 answer

2024-09-10 12:30

Ming has a 170-page book. He read 80 pages in the first 4 days. If he wants to finish it in a week, how many pages will he read every day from the 5th day onwards? From the 5th day onwards, read x pages every day, where x represents the number of pages that the nickname reads every day from the 5th day onwards. Reading 170 pages a day required 170 pages divided by 5 days = 34 pages per day. Therefore, from the fifth day onwards, Ming Xiao needed to read 34 pages a day.

How many pages do I have to read every day to finish reading a 79-page storybook in a week? Dongdong has read 23 pages two days ago. How many pages do I have left to read?

1 answer

2024-09-14 19:52

The book Dongdong was reading was "Science and Technology Tang", which had a total of 79 chapters. He had already read 23 chapters, and there were 56 chapters left. If he was going to finish it in a week, then he would need to read an average of eight chapters a day. It was suggested that Dongdong could arrange some fixed time to watch it every day, so as to ensure a stable progress. I wish Dongdong a happy reading! I hope you like this fairy's recommendation. Muah ~😗

Read a 100-page book, nine pages a day, starting on August 22nd. Can he finish the book by September 1st?

1 answer

2024-09-11 02:49

Read a 100-page book, nine pages a day, starting on August 22nd. Can he finish the book before school starts on September 1st? It was difficult to guarantee that he could finish reading the book before school started on September 1st because reading only nine pages a day was relatively slow. It would take a few days to finish reading the book, depending on the reading speed and time. If one could read nine pages a day and maintain a high efficiency reading habit, it would take about 10-15 days to finish the book before school started. Of course, this was only a rough estimate. The exact time needed to be calculated according to the actual situation.

A 600-page storybook. Nono would read 28 pages a day. Could he finish it in 19 days?

1 answer

2024-09-11 11:08

Reading 28 pages a day in 19 days can finish a 600-page storybook, but you need to pay attention to the following points: 1 The total number of pages in a storybook is 600, and reading 28 pages a day is actually only 28/2 = 14 days to finish reading each page. Therefore, he needed to divide 19 days by 14 days to determine the total number of pages he could read. The answer was that they could finish reading it, but they needed more time. If you read 28 pages a day, you would need 14 days to finish the story book. If Nono only reads 1 page in the remaining 14 days, she will not be able to finish the storybook. Therefore, Nono had to ensure that he could read a certain number of pages every day to ensure that he could read the entire story book. Reading 28 pages a day would take 14 days to finish a 600-page storybook. In the remaining 14 days, he had to ensure that he could read a certain number of pages every day in order to read the storybook completely.

A book has a total of 150 pages, and Xiao Ming has already read 54 pages. The remaining pages are 8 pages a day, and it will take him a few days to finish them.

1 answer

2024-09-26 08:07

Xiao Ming had already read 54 pages and was reading 8 pages a day. Therefore, he still needed 8 × 7 = 56 days to finish reading the remaining pages.

Snowy spent a week reading a book. She read 15 pages a day for the first three days and 95 pages in the last four days. Did Snowy finish the book?

1 answer

2024-09-12 21:29

Snowy finished reading page 140.

A book has 170 pages, Xiao Gang has read 80 pages, and the rest will take 5 days to finish. How many pages do you read on average every day?

1 answer

2024-09-08 09:17

Xiao Gang needed to read an average of 30 pages a day to finish the remaining 170 pages in five days.

A book has 80 pages. Kobayashi read 1/5 of the book on the first day. Which page should he start reading the next day

1 answer

2024-09-15 16:39

Kobayashi read one-fifth of the book on the first day, which was page 25. So the next day he should start reading from page twenty-five.

A 600-page book. Every day, he would read one more page than the day before, and he would finish it in 16 days. How many pages did you read on the last day?

1 answer

2024-09-20 10:57

If the number of pages of the book is x, then the first day is x/page, the second day is (x/page)/2, and so on, the 15th day is (x/page)/16. Because I read one more page every day than the day before, the number of pages I read in 16 days can be expressed as: (x/page)/16 + (x/page)/17 + (x/page)/18 + + (x/page)/15 This is a geometric sequence and the sum is x/page. Therefore, the common ratio of this exponential series is 16, and the first term is x/page. By replacing x/page with the first term of this exponential sequence, we get: (x/page)/16 + (x/page)/17 + (x/page)/18 + + (x/page)/15 = x/page To simplify it: (16x/15)/16 = x Solution: x = 600 Therefore, the book had 600 pages.