Congcong read a book called Encyclopedia for Children. He read 3/8 of the book in a week. There are 250 pages left. How many pages is there in this book?
The book had a total of 250 pages. Cong Cong read 3/8 of the book in a week, which was 250 pages, 3/8 = 666 pages. However, because Congcong had only read a part of it, he needed to add the remaining 250 pages. Therefore, the total number of pages in this book was 666 + 250 = 916.
The number of pages read in a book was the remaining 75%. How many pages did the book read account for? How many pages were left?
If the remaining 75% of the pages of a book were read, it meant that 75% of the pages had not been read. Then, the number of pages that were read would be 25%+80% = 3/4. The number of pages left is a fraction of the number of pages seen. It can be calculated in a similar way: the number of pages left is 1 -the number of pages seen = the number of pages left-the number of pages seen = 75% x the number of pages left divided by the total number of pages. Therefore, the remaining pages were 75% of the total number of pages. The answer was that the remaining pages were 75% of the number of pages read divided by the total number of pages.
Little Light read 3/8 of the book in the first week, and the remaining 1/5 in the second week. There were 34 pages left. He did not look at how many pages the book had.
Let's say the book has $x$pages. Little Light read $3/8$pages of the book in the first week, so he read $3/8 times x$pages. The remaining pages are $x - 3/8 <em> times x = 5/8 <em> times x$pages. The next week, he read the remaining $1/5$pages, so he read $1/5 times 5/8 times x$pages. According to the question, Little Light had read a total of $3/8'times x + 1/5'times 5/8'times x = 17/40 'times x$pages. Since Little Light did not read the book, the remaining pages were $34$. Therefore,$x - 17/40 So the book had a total of $960$pages.
A book with a total of 240 pages. Xiaolan has already read 2/3 of the total pages of the book. How many pages are left to read and write?
Xiaolan had already read 2/3 of the total number of pages in the book, so she had already read (2/3) × 240 = 80 pages. The remaining pages were 240 - 80 = 160 pages. Therefore, there were still 160 pages left to read.
Little Qiao read a storybook, 18 pages a day, half of the book in a week, more than 20 pages, how many pages are left?
Little Qiao read 18 pages of a storybook every day, and in a week, she read more than 20 pages of half of the book. The calculation method is as follows: In the first week, Little Qiao read 18 × 7 = 126 pages. The remaining pages were: The remaining pages of the book-the number of pages read in a week = the remaining pages- 126 - 126 = 100 pages. Thus, Little Qiao still had 100 pages to read.
A book had a total of 170 pages. He had already read 90 pages. How many pages were left?
There were 170 pages in a book. He had already read 90 pages, so there were still 80 pages left.
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?
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.
Xiao Ming is reading an extra-cursory book. This book has 150 pages. He has read three-fifths of the total pages. How many pages has he read and how many pages are left?
The total number of pages that Xiao Ming had read was 150. He had already read three-fifths of the total number of pages, which was 3/5 = 6%. Therefore, Xiao Ming had already read about 6% of the pages, and the remaining pages were 150 - 6%= 144 pages.
Congcong reads a science fiction book and reads five pages a day. There were still 58 pages left. How many pages does this book have?
The book had a total of $58+ 5'times 10=630$pages.
If you read 20% of the book on the first day, 25% of the total pages on the second day, and there are 110 pages left, how many pages are there in the book? stated
Let the total number of pages in this book be x pages. Reading 20% of the book on the first day meant reading 20% * x pages, which was 02x pages. The next day, he read 25% of the total number of pages, which meant that he read 25% * x pages, which was 025x pages. There were 110 pages left. According to the above calculation, the equation can be listed: 02x + 025x + 110 = x Solve this equation: 3x = 110 x = 33 Therefore, the total number of pages in this book was 33.
He had clearly read four-fifths of the story book, but there were still 16 pages left. How many pages was this book?
He had clearly read four-fifths of the storybook, and there were still 16 pages left to write the equation: He had clearly read 4/5 of the storybooks, and there were 16 pages left. 1 + 4/5 = 9/5 books Because I have read 4/5 storybooks, each storybook has: 4/5/1 = 8/15 pages Therefore, this book had: 9/5 × 8/15 = 96/15 pages It was about six pages.