If a book with more than 300 pages was read 10 pages a day, it would take 300 pages/10 pages/day =333 days to finish it. However, this answer is only a rough estimate. In fact, reading speed varies from person to person. Some people may read more pages per day, while others may read slower.
A book has 120 pages. If you only read 60 pages a day, you would need to read 120 pages/60 pages/day = 2 days. Therefore, he only needed two days to finish reading a book.
Xiao Ming had already read 54 pages and was reading 8 pages a day. Therefore, he still needed 8 × 7 = 56 days to finish reading the remaining pages.
There are 75 pages in a book. Xiaoming reads 9 pages a day for 7 days a week. Therefore, Xiao Ming read 9 pages a day, 7 pages a week, and a total of 75 pages. Xiaoming needed seven days to finish reading the 75 pages. Therefore, it takes Xiao Ming at least a few days to finish reading a book. The number of pages depends on the number of pages he reads every day. If he reads 9 pages a day, he needs 7 days to finish reading a 75-page book.
Sister reads a book for three days and reads 15 pages every day. Therefore, she can read 15/60 = 025 pages per hour. If a book had 40 pages, then Sister would need to read 40 pages/025 pages/hour = 160 hours. Because her sister needed to watch for 160 hours, she needed 160 hours divided by 3 days = 56 hours. Therefore, her sister needed 56 hours to finish reading 40 pages of the book.
Xiao Gang needed to read an average of 30 pages a day to finish the remaining 170 pages in five days.
Assuming that the book has a total of x pages, then based on the 170 pages read in the previous 10 days, we can get: Day 1 - 10 days = 170 pages Day 2 - 11 = 180 pages Day 3 - 12 days ago = 190 pages Day 10-First 10 days = 170 pages Therefore, the book had a total of x pages that could list an equation: x = (170 + 180 + + 190) / 10 To simplify it: x = (1700 + 190n) / 10 Where n was the number of pages read on the 10th day. Because on the 10th day, I watched it for 8 days, so there were: n = 8 Substituting n into the above formula: x = (1700 + 190*8) / 10 x = (1700 + 1564) / 10 x = 2264 Therefore, this book had a total of 2264 pages.
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.
Xiao Ming read a book with 600 pages and planned to finish it in 10 days, so his daily reading plan was 600/10 = 60 pages. In fact, he read 30 pages less than he planned, so the number of pages that Xiaoming actually needed to read every day was 60 - 30 = 30 pages. Therefore, the number of days Xiaoming actually needed to read was 60 pages/30 pages/day = 2 days. Therefore, Little Ming actually needed two days to finish reading this book.