When Little Red was reading a book, 5/7 of the pages she had read was equal to 3/5 of the pages she had not read. Little Red had already read 210 pages. How many pages were left?

2024-09-18 15:24

1 answer

2024-09-18 16:20

According to the description of the question, 5/7 of the pages that Little Red had read was equivalent to 3/5 of the pages that she had not read. The number of pages Little Red has read = the number of pages she has not read x 5/7 = 210 pages x 3/5 = 350 pages Therefore, Little Red had 210 pages- 350 pages = 80 pages left. Therefore, Little Red still had 80 pages to read.

When Little Min read a storybook, the ratio of the number of pages that she had read to the number of pages that she had not read was 3:5. If the entire book had 200 pages, how many pages were left unread?

1 answer

2024-09-25 05:53

Little Min had already read 30 pages and there were still 50 pages left.

Little Light was reading a book. The number of pages she had read was 4/5 of the number of pages she had not read. After dinner, she read another three pages. At this time, the number of pages she had read was 5:6. How many pages was this book...

1 answer

2024-09-16 13:48

Let's say the book has x pages. According to the meaning of the question, Little Light had already read 4/5 of page x, which meant that 4/5 x = 3 solved x = 3 × 5/4 = 15/2. The ratio of the number of pages that had been read was 5:6, which was 5/6 × 15/2 = 25/12. Because Little Light had read three more pages, the page ratio was 5:6, which was 25/12 = 5/8. The solution is x = 2425 because the total number of pages in the book must be an entire number, so this book has 24 pages.

A book had a total of 170 pages. He had already read 90 pages. How many pages were left?

1 answer

2024-09-07 17:18

There were 170 pages in a book. He had already read 90 pages, so there were still 80 pages left.

Xiao Li read a book. The number of pages she had read was half of the number of pages she had not read. She read another 30 pages. At this time, the number of pages she had not read was three sevenths of the number of pages she had read. How many pages were there in this book?

1 answer

2024-09-23 13:51

This book has a total of $30+ 30> times 3/7=60$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.

Xiaofang was reading a storybook. The number of pages she had read before dinner was 1/7 of the number of pages she had not read. After dinner, she had read 8 more pages. This was the number of pages she had read was 1/of the number of pages she had not read...

1 answer

2024-09-11 05:27

Xiaofang read a storybook. The number of pages she had read before dinner was 1/7 of the number of pages she had not read. After dinner, she read another 8 pages. Assuming that the total number of pages in the storybook was 100. The number of pages read before dinner is 10 pages, the number of pages not read is 100 pages- 10 pages = 90 pages. After dinner, he read another 8 pages, so the number of pages he had read was 10 + 8 = 18. The ratio of the number of pages seen to the number of pages not seen was 18 pages/90 pages = 1/7. Therefore, Xiaofang had already read 7 pages before dinner, and the remaining pages were 93 pages. She read 8 pages after dinner, so she had read 93 pages + 8 pages = 101 pages in total.

A comic book had a total of 19 pages. He had already read seven pages. How many pages were left?

1 answer

2024-09-16 10:50

This comic book had a total of 19 pages. He had already read 7 pages, so there were 19 - 7 = 12 pages left.

Ding had read 300 pages of a book, which was 27 pages less than the number of pages he had not read. How many pages were left?

1 answer

2024-09-19 03:20

Assuming that the book has a total of n pages, then the ones that Ding has not read are n-300 pages. According to the question, Ding read 300 pages more than he did not. n - (n-300) = 300 To simplify it: 2n - 300 = 300 2n = 300 + 300 2n = 600 n = 300 Therefore, the book had a total of 300 pages. Little Ding had already read 300 pages, but he hadn't read 300-300=0 pages. Hence, there were still 0 pages left.

There were 360 pages in a science book. Little Ding Ding had already read more than half of the pages. How many pages were left?

1 answer

2024-09-16 11:11

Little Ding Ding had already read more than half of the pages, so there were still 360 - 10 - 50 = 190 pages left.

For a novel, the ratio of the pages that Xiaofang had read to the pages that she had not read was 2:5.

1 answer

2024-08-29 22:31

If she had read 20% of the pages of a novel and had not read 50%, then the number of pages that Xiaofang had read was: 20% ÷ 2 = 10% What I haven't seen is 50% divided by 5 = 10% The number of pages that Xiaofang has read is 10% + 10% = 20% Therefore, Xiaofang had already read 20% of the pages, and the remaining pages accounted for 50%.