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The mathematical solution is: someone reads a 252-page novel, 57 of the pages that have been read is equal to 52 of the pages that have not been read, ask him to read...

2024-09-15 21:39
1 answer
2024-09-15 22:22

Suppose the number of pages read by the person is x, and the number of unread pages is 252-x. According to the meaning of the question, 57 of the number of pages read is equal to 52 of the number of pages not read. The following equation can be written: 57 = 52 + x Solve the equation: x = 91 Therefore, the number of pages that the person has read is 91, and the number of unread pages is 252-91=161. He was now reading page 162.

A storybook has a total of 100 pages. The number of pages that have been read is four times the number of pages that have not been read. How many pages have been read? How many pages are left?

1 answer
2024-09-16 11:03

The storybook has a total of 100 pages. The number of pages that have been read is four times that of the number of pages that have not been read. The known number of pages seen = the number of pages seen + the number of pages left, which was 4 unseen pages = the number of pages seen + the number of pages left. Transferring the items would yield 5 pages remaining = 4 pages viewed, which meant that the remaining pages = 4 pages viewed divided by 5. Since the story book has a total of 100 pages, 4 pages viewed/5 = 8 pages remaining. Thus, there were still eight pages left.

The number of pages that have been read is 1/7 of the number that has not been read

1 answer
2024-09-16 13:21

It was wrong to say that the number of pages that had been read was 1/7 of the number that had not been read. This was because when reading a novel, one would usually mark the number of pages in the process of reading, such as marking the number of pages at the end of each page or using a bookmark to record the parts that had been read. Therefore, the number of pages read and the number of pages not read may be different, but their ratio should be the same.

There are 200 pages in a book. The number of pages that have been read is the remaining 60%. How many pages have you read?

1 answer
2024-09-18 14:16

If the number of pages seen is x, the remaining pages are 200-x. According to the meaning of the question, the equation can be listed: x = 60% (200-x) To simplify it: x = 60% × 200 - 60% × x To solve the equation: 120 - 30% × x = 200 30% × x = 80 x = 240 Therefore, the number of pages he had seen was 240.

Xiao Xiao read a book, the 210 pages of the story book, the number of pages that have been read is 75% that have not been read, how many pages do you have left?

1 answer
2024-09-18 15:35

I need more context to answer this question. Please provide me with more details about the story and how Xiaoxiao read the book so that I can better answer your questions.

There are 420 pages in a book. The number of pages that have been read is the remaining 3/4. How many pages are left?

1 answer
2024-09-16 10:52

Assuming that there were still x pages left, the number of pages that had been read would be 420 - x. According to the question, the number of pages that have been read is the remaining three-quarters, so the following equation can be written: 420 - x = 3/4 (420 - x) To simplify it: x = 396 Therefore, there were still 396 pages left.

Three fifths of a book has been read, and there are 15 pages left. The number of pages read is a fraction of the number of pages not read

1 answer
2024-09-18 15:44

If a book has been read three-fifths of the way and there are 15 pages left, then the number of pages read is the number of pages not read: Number of pages seen/number of pages not seen = 3/5/4/5 = 3/4 Therefore, the number of pages that had been read was four-thirds of the number of pages that had not been read.

When someone reads a 252-page novel, the number of pages he has read is equivalent to 2 and 1/2 times the number of pages he has not read. How many pages has he read?

1 answer
2024-09-10 18:08

Let the number of pages he has read be x and the number of pages he has not read be 252-x. According to the meaning of the question, the equation could be listed: x × 5/7 = (252 - x) × 2 × 1/2 To simplify it: 5x = 1260 - 7x 8x = 1260 x = 150 Therefore, he had already read 150 pages, and the number of pages he had not read was 252-150=102 pages. Therefore, he had read page 150 but not page 102.

Little Ding Ding reads a book with a total of 170 pages. The number of pages that have been read is 10 pages more than the remaining 3 times, so how many pages are left?

1 answer
2024-09-16 10:53

Assuming that the number of pages that Little Ding Ding had read was x, the remaining pages were 170-x. According to the conditions in the question, the number of pages seen is 10 pages more than the remaining pages. The following equation can be listed: x = (170 - x) + 10 To simplify it: 2x = 180 x = 90 Therefore, the number of pages that Little Ding Ding had read was 90, and the remaining pages were 170-90=80. Therefore, Little Ding Ding still had 80 pages left to read.

I have read 8 pages of a book, and the number of pages that I haven't read is 4 times that of reading. How many pages does this book have?

1 answer
2024-09-20 23:53

Suppose the book has x pages. Since he had already read 8 pages, the remaining pages were x - 8. In addition, the number of pages in the book was four times the number of pages read, which meant that the remaining pages were 4x. According to the meaning of the question, we can list the equation: x - 8 = 4x Solve the equation: 2x = 8 x = 4 Therefore, this book had a total of four pages.

When Little Red was reading a book, 5/7 of the pages she had read was equal to 3/5 of the pages she had not read. Little Red had already read 210 pages. How many pages were left?

1 answer
2024-09-18 15:24

According to the description of the question, 5/7 of the pages that Little Red had read was equivalent to 3/5 of the pages that she had not read. The number of pages Little Red has read = the number of pages she has not read x 5/7 = 210 pages x 3/5 = 350 pages Therefore, Little Red had 210 pages- 350 pages = 80 pages left. Therefore, Little Red still had 80 pages to read.

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