Xiaofang was reading a novel. The number of pages she had read before dinner was one-seventh of the number she had not read. After dinner, she read another eight pages. At this time,Xiaofang read the novel as follows:
Before dinner, Xiaofang had read less than one-seventh of the novel, which was about 16 pages. Therefore, she had read less than one-seventh of the novel before dinner.
After dinner, Xiaofang read another eight pages. At this time, she had read about 1/7 + 1/8 = 1/4 of the novel. Therefore, Xiaofang read another quarter of the novel after dinner.
To sum up, Xiaofang had read 16 pages before dinner and 1/4 pages after dinner, a total of 3/4 pages.
Xiao Ming was reading a storybook. The number of pages he read before dinner was one-fifth of the number of pages he had not read. After dinner, he read another six pages. At this time, the number of pages he had read was four of the number of pages he had not read…Xiao Ming read a storybook. The number of pages he read before dinner was one-fifth of the number of pages he did not read. After dinner, he read another six pages. At this time, the number of pages he read was four of the number of pages he did not read.
According to the story, Xiao Ming had already read a part of the storybook before dinner, which was one-fifth of the unread pages. Therefore, the number of pages he read before dinner was one-fifth of the total number of unread pages. After dinner, he read another 6 pages. The number of pages he had read was one-fourth of the total number of pages he had not read, which was one-fourth of the total number of pages he had not read.
Therefore, Xiaoming had read 11/10 of the storybook before and after dinner, which was also 11/10 of the unread pages. This ratio could be expressed as:
Number of pages not seen/number of pages seen = 11/10
The number of unread pages is the ratio of the total number of pages, the number of read pages is the number of unread pages.