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.
Zhang Ming was reading a storybook. He read 30 pages a day. After three days, there were still 8 pages of the book left. How many pages were there in this storybook?
Let's say this storybook has a total of $x$pages. According to the topic, 30 pages per day meant $30/div2 = 15$per hour. Zhang Ming read $15$pages per hour in $3$days so he read $3/30 = 90$pages in total. The remaining pages are $8/5 of the book, so there are: $$ 90 - \frac{8}{5} = \frac{16}{5} $$ Because the question requires the number of pages in the book, you need to multiply this result by $x$pages to get: $$ x \times \frac{16}{5} = \frac{16}{5} \times x = 96 $$ Solve this equation to get $x = 56$. So this story book had a total of $56$pages.
A storybook has 252 pages. After reading it for 8 days, there are 12 pages left. How many pages do you read every day?
If a book has 252 pages and has been read for 8 days and there are 12 pages left, then the total number of pages in the book is 252 - 12 = 240 pages. The number of pages he read every day should be 240/8 = 30 pages. Therefore, you should read 30 pages a day.
A book has a total of 90 pages. After reading for 2 days, there are still 30 pages left. How many pages does Xiaohua read every day?
A book has a total of 90 pages. After reading it for two days, Little Light still has 30 pages left. 30 pages/2 days = 15 pages/day Because Little Light reads 15 pages of this book every day, the proportion of pages that Little Light reads every day is: 15/90 = 1/6 Therefore, Little Light read one-sixth of the book every day.
Xiao Gang reads a story book every day and reads 56 pages. After reading for four days, there are still 3/11 pages left. How many pages is this book?
Let's say the book has $x$pages. Xiao Gang reads $56$pages a day, so the number of pages needed to finish the book in four days is $56/times 4 = 216$pages. The remaining pages are $3/11$of the book, which means that the remaining pages are $216/div3/11 = 80$pages. Because Xiao Gang still needed to read for four days, the total number of pages he needed to read was $80 + 4 = 84$pages. Therefore, the book has a total of $x = 84$pages.
If a cockroach reads 16 pages of a book every day, there will still be three-eighths of the book left after five days. How many pages are left?
Let's say the book has x pages. Cockroach read 16 pages a day for five days, and three-eighths of the book was left to write equations: x * 3/8 = 5(16+x) To simplify it: x = 48 So this book has 48 pages. Cockroach watched for a total of five days, so he still had: 48 * 3/8 = 27 pages Therefore, there were still 27 pages left in 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.
Little Light read a storybook and read 60 pages a day. After three days, he still had 5/8 of the book left. How many pages was this storybook?
Let's say this storybook has a total of $x$pages. Reading $60$pages a day, the number of pages Little Light read in $3$days was: $$60\times3=180$$ The remaining pages are 5/8 of the book, so the following equation can be written: $$x\div5=8\times60\times3$$ Solve this equation: $$x=2400$$ So this storybook had a total of $2400 pages.
Xiao Xin reads a book, reads 12 pages a day, and after 5 days, there is still 40% of the book left. How many pages is this book?
Assuming the book has a total of $x$pages: - How many days did Xiao Xin read the $12$page every day? - Xiao Xin has read $5$for days and has $40 $left. This means that there are still $(40/100)/times 12$pages left. - This book has a total of $x$pages, so there are: $$ 12\times 5 + (40/100)\times 12 = x $$ Solve the equation: $$ x = 80 $$ So the book had a total of $80$pages.
A storybook, read an average of 15 pages a day. After reading for 12 days, the remaining pages are more than 2/7. How many pages are left?
There was a total of $12/15 - 1/15 = 165$pages left in the storybook. After reading the remaining two-sevenths, the remaining pages were two-sevenths of the original number. Therefore, he still needed to look at $165/div2/7 = 105$. Therefore, there were still 60 pages left.
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.