If you read a book, you can read a quarter of the book on the first day, and two-fifths of the book on the second day. There are still 14 pages left. How many pages are there in this book?
No answer now
Reading a 40-page story book, on the first day, you read three-eighths of the book, and on the second day, you read two-fifths of the book.
On the first day, he read three-eighths of the book, which was 40 × 3/8 = 15 pages. The next day, he read two-fifths of the book, which was 40 × 2/5 = 8 pages. Therefore, the answer was that he read eight pages the next day.
Xiao Hong read a book. On the first day, she read 25% of the total pages of the book. On the second day, she read two-fifths of the total pages of the book. There were still 35 nights left.
A book has 128. Lingling read a quarter of the book on the first day. How much did she read on the first day?
Ling Ling read a quarter of the book on the first day, which was 128 div4 = 32. Therefore, Ling Ling read 32 pages on the first day.
Little Light read a story book. On the first day, he read a quarter of the book, and on the second day, he read a fifth of the book. On the first day, he read 10 more pages than the second day.
If the total number of pages in the storybook was X, then Little Light would read a quarter of the book on the first day, which was X/4 pages, and a fifth of the book on the second day, which was X/5 pages. According to the topic, the first day was 10 pages more than the second day, so there were: (X/4 - X/5) = 10 To simplify it: X/10 = 10 X = 100 Therefore, the total number of pages in the storybook was 100. Little Light read 100/4 = 25 pages on the first day and 100/5 = 20 pages on the second day. He read 45 pages in total.
Little Cong read a book and read 15 pages a day. After four days, there were still three-fifths of the book that he had not read. How many pages was this book?
Suppose the book has x pages: Little Cong read 15 pages a day for four days, a total of 4×15=60 pages. The total number of pages in the book is x, so: 60÷(1+3/5)=x÷5 The solution was:x=60×5 div3 =600 div3 =200 pages. Therefore, the book had a total of 200 pages.
Little Red read a book and read 15 pages a day. After four days, there were still three-fifths of the book that she had not read. How many pages was this book?
Little Red reads 15 pages a day for 4 days and still has 3/5 of the book left. She can write the following equation: Remaining pages/pages per day = 3/5 of the book Solve the equation: Remaining pages = 3/5 x pages of the book Substituting the remaining pages into the original book's page count, he obtained: 3/5 x pages of the book = 15 pages Therefore, this book had: 15 pages × 3/5 = 15 pages/3/5 = 150 pages
Xiao Hong read a book and read 15 pages a day. After four days, she still had three-fifths of the book left. How many pages was this book?
Let's say the book has $x$pages. Reading 15 pages a day, it would take Xiaohong $x$days to finish reading this book. The remaining pages were three-fifths of the book, which was $025x$. According to the question, it would take Xiaohong four days to finish reading this book. Therefore, we can write the equation: $$ x + 025x = 025 \times (x+4) $$ Solve this equation: $$ x = 30 $$ So this book has 30 pages.
He had read two-fifths of a story book on the first day and one-fourth of the book on the second day. There were still 70 pages left. How many pages were there in the book?
Suppose the book has x pages. On the first day, he read two-fifths of the book, which was 2/5x pages. The next day, he read a quarter of the book, which was x/4 pages. Because there were still 70 pages left, there were: 2/5x + x/4 - 70 = 0 To simplify it: 5x/4 - 70 = 0 Solution: x = 400 Therefore, the book had a total of 400 pages.
Xiao Lin read a book. On the first day, he read 1/5 of the book. On the second day, he read 4/9 of the book. At this time, there were still 32 pages left.
Kobayashi read 1/5 of the book on the first day and 4/9 on the second day. The remaining pages were: 32 pages/(1 - 1/5) - 32 pages = 32 - 32 pages/4/9 = 32 - 48 pages/1/5 Next, Kobayashi needed to convert the remaining pages into whole pages and calculate: 32 - 48 pages/1/5 = 160 - 192 pages/4/9 = 160 - 384 pages/5 Since the number of pages and the number of pages were both whole numbers, the final result should be 160 - 384 = 112 pages. Therefore, Kobayashi had already read 1/5 + 4/9 of the book before the next day, which was 11/45. The remaining pages were 32 pages. Kobayashi needed to finish these 32 pages by the next day to finish the book.
Xiao Hong read a storybook. On the first day, she read 30 pages, which happened to be a quarter of the book. On the second day, she read a third of the book.
The next day, Little Red finished reading 30 pages of the book. The remaining pages were 1-1/4=3/4 pages of the book. On the first day, Little Red finished reading 1/4 of the book. The remaining pages were 3/4-1/4=1/4 pages. The next day, Little Red finished reading 1/4 of the book. The remaining pages were 1/4-3/4=1/4 pages. Therefore, Little Red finished reading 1/4+1/4=1 page of the book in two days.