Li Xin wanted to read a 600-page children's fairy tale. She planned to finish it in 12 days, but she actually read 40% in 6 days. According to this calculation, Li Xin could finish reading it in a few days…
According to the topic, Li Xin planned to finish reading Children's Fairy Tales in 12 days, but in fact, she read 40% in 6 days. Then the number of pages he read in the first six days was: The number of pages read in the previous 6 days/total number of pages = 40%/600 = 0067 In other words, the number of pages he read in the first six days accounted for 0.67% of the total number of pages, which was six pages. Therefore, Li Xin needed to choose 5 out of the 6 pages to be his main text, and the remaining 1 page could be used as a reference or an attachment. For the remaining page, he needed to calculate how many pages he needed to read every day: 1 page × 6 days = 001667 Because the total number of pages that needed to be read every day was six, so: 001667 ÷ 6 = 0002833 He needed to read page 0002833 every day. Therefore, Li Xin needed to read page 0002833 every day for the next 6 days to finish the last page. If you want to calculate the total number of days you need to read, you need to multiply the total number of pages you need to read per day by the number of days: (0002833 ÷ 6) × 12 = 0004867 Therefore, Li Xin needed 12 days to finish reading Children's Fairy Tales.
Xiaoling was reading a 300-page novel. She had read 80 pages in the first four days. According to this calculation, how many more days would it take to finish the rest of the books?
Xiaoling had read 80 pages in the past four days, so her average reading per day was 80/4=20 pages. The novel had a total of 300 pages. Xiaoling had read it for 4 days and had 240 pages left. Therefore, Xiaoling still needed (240 - 80 pages)/20 pages/day =12 days to finish all the books.
Xiaoling read a 300-page novel and read 80 pages in the first four days. According to this calculation, how many more days will it take to finish reading the remaining pages?
Xiaoling read a 300-page novel and finished reading 80 pages in the first four days, so Xiaoling had 300 - 80 = 220 pages left. Because Xiaoling needed to read 220 pages to finish reading, she needed to read 220/7 = 32 pages every day. Therefore, Xiaoling needed to finish reading the remaining 220 pages in the next 7 days, which meant that she needed 220/32 = 6 days. Therefore, Xiaoling needed to read 32 pages a day for the remaining six days to finish the novel.
Auntie Zhang planned to finish reading a novel in seven days. How much of the book would she finish in five days?
张阿姨计划用7天看完一本小说那么她每天可以阅读小说的 $\frac{1}{7}$ 部分。 因此她5天可以阅读小说的 $\frac{1}{7}$ 的 $\frac{5}{7}$ 次方即 $\frac{1}{21}$ 的部分。 因此张阿姨5天可以阅读小说的 $\frac{1}{21}$ 的比例即 $\frac{1}{21}$ 。
Zhang Li read a 290-page novel. For the first four days, she would read 20 pages a day. For the rest of the time, she planned to read 10 pages a day. How many more days would it take to finish the book?
Zhang Li read a 290-page novel for the first four days and read 20 pages a day. She planned to read 10 pages a day for the rest of the time. Calculating the number of pages read in the previous 4 days:4 days x 20 pages/day = 80 pages. The remaining pages:290 - 80 = 210. The number of pages left per day:210 pages/10 pages/day = 21. The remaining days were 21 days. Therefore, Zhang Li needed another 21 days to finish reading the book.
Fang Fang had read a 250-page storybook, and she had read 75 pages in the past three days. Based on this calculation, how many days would it take for her to finish reading this book?
Fangfang read 75 pages in the first three days, so the number of pages she read on the first day was: 75 ÷ 3 = 25 The number of pages that Fangfang read every day was: 25 + 25 + 25 = 70 Therefore, the total number of days Fang Fang needed to finish reading this book was: 250 ÷ 70 = 35 Therefore, it would take Fangfang about four days to finish reading the book.
Xiaoyu was reading a science fiction novel. She had planned to finish it in 45 days, but she actually read 25 pages a day, which was 5 days shorter than her original plan. How many pages is this book?
Let's say the book has x pages. According to the original plan, Xiaoyu needed 45 days to finish reading the book, so she needed to read x pages every day. The actual 25 pages per day was 5 days shorter than the original plan, so the total number of pages that needed to be read was: 45 days/25 pages/day = 18 days Because Xiaoyu read 25 pages more than she originally planned, the total number of pages she needed to read was: 25 pages/day x 18 days = 600 pages So this book is 600 pages.
Xiao Ling read a 290-page novel. For the first four days, she read 20 pages a day. From now on, he would be able to finish reading 30 pages a day in a few days.
You can use the following formula to calculate the number of days it will take Xiao Ling to finish reading this novel: Days = total page count/page count for the first 4 days + 1(add 1 day later) Total pages = 290 pages The number of pages read in the first 4 days = 20 pages/day × 4 days = 80 pages/day Therefore, the total number of pages that Xiao Ling needed to read was 290, and she had read 80 pages a day for the first four days, totaling 480 pages. Next, Xiao Ling needs to read 30 pages/day in the next day, so she still needs to read 480 pages/30 pages/day = 16 days Therefore, Xiao Ling needed 16 days to finish reading this novel.
Xiao Ming planned to read a novel every few days. If he read 60 pages a day, he could finish it five days earlier. If he read 40 pages a day, he would have to finish it three days later.
Xiao Ming plans to read a novel every few days. If he reads 60 pages a day, he can finish it five days earlier. If he reads 40 pages a day, he will finish it three days later. Calculating how much faster reading 60 pages a day was than reading 40 pages a day: Reading 60 pages a day is better than reading 40 pages a day, reading 40 pages per hour, 60 pages = 067 hours Therefore, the total time Little Ming needed was: 1/067 = 1667(hours) 5 days ago 1667/067 = 28(hours) Days of delay Therefore, Xiao Ming needed 28 hours to finish reading this novel, which was longer than expected. Next, we can calculate the ratio of reading 60 pages a day to reading 40 pages a day, reading 40 pages per hour, reading 60 pages = 067 hours 's progress: Reading 60 pages a day is better than reading 40 pages a day. Reading 60 pages per hour/40 pages = 15 hours Therefore, the total time Little Ming needed was: 1 × 15 = 0667(hour) 5 days ago 0667/15 = 04(hours) Days of delay Therefore, Xiaoming needed four hours to finish reading this novel, which was shorter than the estimated time. To sum up, Xiaoming plans to read a novel every few days. If he reads 60 pages a day, he can finish it five days earlier. If he reads 40 pages a day, he will finish it three days later. If reading 60 pages a day was faster than reading 40 pages a day, reading 40 pages per hour, reading 60 pages per hour = 067 hours, the total time required was 1667 hours; if reading 60 pages a day was slower than reading 40 pages a day, reading 60 pages per hour, reading 60 pages per hour = 15 hours, the total time required was 0667 hours.
If Xiao Hong reads a children's novel and reads 12 pages a day, she can finish it in 10 days. If she reads 15 pages a day, how many days will she finish it?
If Xiao Hong reads a children's novel and reads 12 pages a day and can finish it in 10 days, then the number of pages in this novel is: 12 pages/day x 10 days = 120 pages If I read 15 pages a day, how many days would it take to finish it? 15 pages/day x days = 150 pages To determine the total number of pages in this novel, we need to divide 120 pages by the total number of pages we read every day, 15 pages, to get: 120 pages/15 pages/day = 8 days Therefore, Little Red needed eight days to finish reading the same children's novel, which was 15 pages a day.
Xiaoli planned to finish reading a science fiction novel with 300 pages in 20 days. She read a few parts of the book every day. After 12 days, how many pages were left?
Xiaoli planned to finish reading the book in 20 days, so the number of pages she needed to read every day was: 300 pages/20 days = 15 pages/day Xiaoli used 12 days to finish reading this book, so the total number of pages she read was: 12 days x 15 pages/day = 180 pages How many pages of the book are left? We can divide the remaining pages by the number of pages we read every day: (300 pages- 180 pages)/(15 pages/day + 15 pages/day) = 10 pages/day Therefore, after reading for 12 days, Xiao Li still had 10 pages left.