Xiao Ming reads a book. He reads 1/13 of the book every day. After 4 days, there are 90 pages left. How many pages are there in this book?
Assuming that the book has $x$pages, the number of pages that Xiaoming reads on the fourth day is $x$multiplied by $1/13$. Because Xiao Ming had read for 4 days, the number of pages he read plus the remaining pages equals the total number of pages: $$ x + (x \times 1/13) + 90 = x $$ To simplify it: $$ x \times 12 - x \times 1/13 + 90 = 0 $$ Solve this equation: $$ x = 130 $$ Therefore, the book had a total of 130 pages.
Xiao Ming reads a book. If he reads 15 pages a day, he will finish it in 24 days. If he reads 20 pages a day, how many days will he finish it?
If Xiao Ming reads 15 pages a day, the total number of pages he needs is: 15 pages/day x 24 days = 360 pages Therefore, Xiao Ming needed to read 360 pages to finish it in 24 days. The number of days required to read 20 pages a day is: 20 pages/day x days = 20 days Therefore, Xiao Ming needed to read for 20 days to finish the book.
Little Light reads a book. He reads 15 pages a day. After 4 days, he still has 3/5 of the book left. How many pages is this book?
Assuming that the book had a total of $n$pages, then according to the question, Little Light finished reading $15/times 4 = 60$pages in 4 days. The remaining pages are $n - 60$. And because the total number of pages in the book is 3/5 of the book, there are: $$n - 60 = 3/5 \times n$$ The above formula was simplified to: $$n = 225$$ Therefore, the book had a total of 225 pages.
If Little Ming reads a book, if he reads 15 pages a day, he will finish it in 24 days. If he reads 20 pages a day, how many days will he finish it?
If Xiao Ming reads a book every day for 15 pages and 24 days, then the book has a total of 15 * 24 = 360 pages. If I read 20 pages a day, how many days can I finish it? Assuming that the book has x pages, the total number of pages that Xiaoming needs to read is 20 * x days. Because Xiao Ming needed to read 360 pages, there were: 20 * x = 360 Solve this equation: x = 180 Therefore, Xiao Ming needed to read 180 pages to finish the book. If he read 20 pages a day, he would need 180 * 20 days = 3720 days to finish the book.
How many pages are there in this storybook? If Xiao Qiang reads 20 pages a day, what if there are 15 pages left in the book after five days?
According to the question, Cockroach read 5 days *20 pages/day =100 pages, and the remaining 15 pages of the book are equal to the total number of pages-100 pages that have been read, so the total number of pages is: 100 pages +15 pages =115 pages. The answer was page 115.
Xiao Ming reads a book, and after 7 days, there is still 1/3 of the book left. In the next five days, he would read 60 pages in total. How many pages did Xiao Ming read on average every day?
After reading a book for 7 days, Xiao Ming still had 1/3 of the book left. This meant that he had read 1/3 of the book and the remaining 2/3 of the book needed to read 2/3 × 7 = 4/3 days. Reading a total of 60 pages in the next 5 days meant that Xiaoming had read (60/5) = 12 pages in these 5 days. Therefore, Xiaoming read an average of 12 pages a day.
Xiao Ming reads a book, if you read 35 pages a day
According to the information provided, if Xiaoming read 35 pages a day, he would need eight days to finish reading. The book had a total of 315 pages, so he needed to read 39 pages a day to finish it by date. On the last day, he needed to read 42 pages to finish reading.
Reading a storybook every day, 40 pages a day. After 3 days, there is still 5/8 of the Golden Book left. How many pages is this book?
Assuming the book has $x$pages: - $40$on the first day. - The next day, he read $40/times 2 = 80$pages. - On the third day, if you read $3/8$on $40$pages, you would read $10$pages. Because there was still $5/8 left, there was: $$ 40 + 80 + 10 = \boxed{120} $$ So this book has 120 pages.
Xiao Ming reads a novel, if he reads 35 pages a day,
If Xiao Ming reads 35 pages a day, then his reading speed is very fast. According to some studies, the average human can read about 200-300 pages a day, and some professional readers may read more. If Xiao Ming's reading speed could reach this level, he might gain more understanding and experience in the novel.
Xiao Ming reads a book with 132 pages. After reading for 5 days, there are 72 pages left.(2) If you can only borrow it for 9 days, how many pages do you read on average every day from the 6th day onwards?
Xiao Ming reads a book with a total of 132 pages. After reading for 5 days, there are still 72 pages left. The total number of pages that Xiao Ming reads is 132 - 72 = 60 pages. If he could only borrow it for 9 days, then the total number of pages Little Ming needed to borrow was 60 pages/9 days = 6 pages/day. From the sixth day onwards, he read an average of 6 pages per day x 9 days = 54 pages. Answer 2: Assuming that from the first day onwards, Xiaoming reads x pages every day, then after he reads the number of pages borrowed in the previous 9 days, Xiaoming still needs to borrow 132 pages- 9 days x x pages = 132 pages- 9x pages. Therefore, we can write the equation: 132 pages- 9x pages = 1 page Solve this equation: 8x pages = 132 pages-9x pages = 23 pages x pages = 3 pages Therefore, Xiao Ming needed to read 3 pages/day, which was 9 pages, on the 6th day.
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.