Little Ming read a book and read 120 of the book every day. After 5 days, there were 120 pages left. How many pages does this book have? He still needs a few days to finish reading it)

2024-09-16 11:02

1 answer

2024-09-16 15:11

This book had a total of $1/20/div1/20 = 600$pages. Little Ming still needed $5/div2 = 2$days to finish reading this book.

Xiao Ming read a book and read 15 pages a day. After reading for 4 days, he still had 2/5 of the book left. How many pages does this book have?

1 answer

2024-09-16 18:13

Xiao Ming read a total of $4/15 = 60$pages in 4 days. The remaining pages are $2/5$of the book, so the book has a total of $2/5/60 = 48$. Thus, the book had a total of 48 pages.

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?

1 answer

2024-09-16 10:51

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.

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?

1 answer

2024-09-16 18:03

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.

There were 170 pages in a book. He read 12 pages a day, and after 13 days, there were only a few pages left.

1 answer

2024-09-07 17:14

If a book has 170 pages and you read 12 pages a day, you can finish the book in 13 days. The calculation process was as follows: 13 days * 12 pages/day = 144 pages 170 pages plus 144 pages, 214 pages in total. Therefore, if you read 12 pages a day for 13 days, you would still have 214 pages left.

Little Ming read a book. He read 15 pages in the first 4 days and 6 pages a day in the next 5 days. How many pages did he read on average every day?

1 answer

2024-09-16 12:50

Xiao Ming read a book for the first 4 days and read 15 pages, then read 6 pages every day for 5 days. We can use the following formula to calculate the average number of pages seen per day: Average number of pages read per day = total number of pages/days Substituting the total number of pages and the number of days into the formula, we get: Average number of pages read per day = 15 pages/4 days = 3 pages/day Therefore, Xiao Ming read an average of three pages a day.

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?

1 answer

2024-09-16 18:02

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.

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?

1 answer

2024-09-16 12:07

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.

Little Red read a book and read 15 pages a day. After four days, she still had 3/5 of the book left. How many pages was this book?

1 answer

2024-09-15 14:06

Little Red reads a book 15 pages a day, and after 4 days, there is still 3/5 of the book left. We can assume that this book has x pages. According to the question, Little Red had read a total of $4/times 15 = 60$pages in 4 days. The remaining pages are 3/5 of the book, so there are: $$ 60\div 3/5=24 $$ Therefore, the book had 24 pages.

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?

1 answer

2024-09-13 12:39

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 Dong read a 420-page book. He read 26 pages a day. After reading for 13 days, how many pages were left?

1 answer

2024-09-16 11:04

Xiao Dong read a 420-page book. He read 26 pages a day, and after 13 days, there were still pages left. The calculation process was as follows: The total number of pages he read in 13 days was 26 * 13 = 336 pages. The total number of pages in this book is 420, so the total number of pages needed to read the whole book is 420. Therefore, the number of pages Little Dong needed to finish reading the book in 13 days was 336 pages/13 days = 26 pages/day. Because Xiao Dong read 26 pages every day, the total number of pages he read every day was 26 + 26 = 52. Therefore, the number of pages Little Dong needed to finish reading the book in 13 days was 52 pages/13 days = 4 pages/day. Because Xiao Dong read four pages a day, the remaining pages were 420 - 4 * 13 = 420 - 52 = 368. Therefore, Xiao Dong still had 368 pages to read.