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Xiao Hong: I walked 4 / 3km in 1 / 2H. Xiao Li; I walked 7 / 5km in 2 / 3H. Who can walk fast?
Xiaohong 4 / 3 △ 1 / 2 = 8 / 3 km / h = 80 / 30 km / h
Xiaoli 7 / 5 △ 2 / 3 = 21 / 10 km / h = 63 / 30 km / h
So Xiao Hong is quick
Xiao Li and Xiao Hong have 56 books in total. Xiao Li is Xiao Hong's 3:5. How many books do Xiao Li and Xiao Hong have?
Xiaoliyou: 56 (3 + 5) × 3 = 21
Xiaohongyou: 56-21 = 35
According to the dialogue between Xiaoqiang and Xiaoli, please find out the original price of the books Xiaoqiang bought last time
Xiao Li: it's said that 20 yuan for a membership card will give you 20% discount on books
Xiaoqiang: Yes, I bought a few books last time, and I saved 12 yuan on the card
How much was the original price of the books Xiaoqiang bought last time?
160
How many extra-curricular books does Xiao Li have? Xiao Li: you have two more than 20% of mine. Xiao Qiang: my extra-curricular books are three less than one fourth of yours
(2+3）/(1/4-1/5)=100
RELATED INFORMATIONS
- 1. Xiaoli's books are 1.2 times of Xiaoqiang's books. If Xiaoli gives Xiaoqiang eight books, they will have the same number of books
- 2. Xiao Li read 20 more extra-curricular books than Xiao Ming. Xiao Ming read one third of Xiao Li's extra-curricular books. How many pages did Xiao Li and Xiao Ming read?
- 3. Xiao Hong and Xiao Ming study together. When they solve a set of equations {ax + 5Y = 15,4x-by = - 2} about X and y, because Xiao Hong misread a in the first equation, The solution of the system of equations is {x = 1, y = 3, Xiao Ming misjudged B in the second equation, and obtained the solution of the system of equations as {x = - 5, y = 2, try to find the value of a, B, and calculate the value of a ^ 2006 + (- 2 / 1b) ^ 2005
- 4. The temperature difference from the foot of a mountain to the top of a mountain is 6 degrees, and the temperature drops by 0.6 degrees for every 100 meters increase. How high is the mountain
- 5. When the height of an area increases by 100 meters, the temperature drops by 1.2 ℃. Xiaohong and Xiaoming designed a method to measure the height of the mountain peak. Xiaohong is at the foot of the mountain and Xiaoming is at the top At the same time, they measured the temperature of 2.5 ℃ and 0.1 ℃ at the foot and top of the mountain at 9 a.m
- 6. Relevant data show that: when the height of an area increases by 100 meters, the temperature drops by 0.8 ℃. Xiaoming and Xiaoying come up with a way to measure the height of the mountain peak. Xiaoying is at the foot of the mountain, Xiaoming is at the top of the mountain. At the same time, they measured the temperature at the foot of the mountain and at the top of the mountain at 10 o'clock in the morning, which are 2.2 ℃ and 0.2 ℃ respectively. Do you know how high the mountain peak is?
- 7. Xiaowei and Xiaoli go to the bookstore to buy books. They see a set of four books of scientific exploration. Xiaowei's money is not enough, and it's 14.5 yuan short. Xiaoli's money is not enough
- 8. Xiaoli and Xiaohua each have several storybooks. If Xiaoli gives Xiaohua five, the number of them is equal; if Xiaohua gives Xiaoli four, then Xiaoli's story Xiaoli and Xiaohua each have several storybooks. If Xiaoli gives Xiaohua five, the number of them is equal. If Xiaohua gives Xiaoli four, the number of Xiaoli's storybooks is just three times that of Xiaohua. How many storybooks did Xiaoli and Xiaohua have?
- 9. English translation, visit their friends
- 10. English translation Unit 6 of grade 2 Urgent 1
- 11. Xiaohong and Xiaoli have 112 stamps in total. The number of stamps of Xiaohong is six times that of Xiaoli. How many stamps do they each have
- 12. Xiao Hong has three more stamps than Xiao Li. If Xiao Hong gives Xiao Li three more stamps, whose stamps are more and how many more?
- 13. Xiao Li, Xiao Hong and Xiao Fang weigh 54 kg, 56 kg and 52 kg, respectively How many kilos are the three of them?
- 14. Xiaohong has m storybooks. Xiaoli has 5 more than Xiaohong, and Xiaohong has 4 more than Xiaofang. How many storybooks do Xiaohong, Xiaoli and Xiaofang have on average? Find the formula and write the equation
- 15. One day, Xiao Hong and Xiao Li went shopping. The ratio of money they brought was 9:7. Xiao Hong spent 30 yuan and Xiao Li spent 50 yuan. When they left the mall, the ratio of money they had left was 2:1. How much money did they bring?
- 16. Xiaoli takes a car from Qingdao to her grandmother's home in Huangdao. When she goes there, she passes the ring Bay expressway, the whole journey is about 84 kilometers, and when she returns, she passes the cross sea bridge, the whole journey is about 45 kilometers. The average speed of Xiaoli's car is 1.2 times of that of her return, but it takes 20 minutes more than that of her return 84/1.2x-45/x=20/60 Why 20 / 60?
- 17. (1) it's summer vacation. Xiao Li, her father and mother travel from Harbin to Guangzhou by train. What's the best route to choose______ Line______ Line. (2) what should I take from Beijing to Guangzhou______ The first train, along the way through the important railway hub is______ ．
- 18. Xiaoqiang scored 5 points more than 9 out of 8 in Xiaoli's test. How much did Xiaoli do in math?
- 19. Xiao Li's family went to catch the train and wanted to buy three cakes. It takes 16 minutes to make them now. It takes 5 minutes to cook one cake on both sides. Two cakes can be put in one pot at a time, so three cakes A chef said it only takes 15 points to use his brain. Do you know how to cook it
- 20. Xiaohong, Xiaoli and Xiaoyu spent 23.75 yuan in the supermarket. Xiaoli and Xiaoyu spent 11.28 yuan in the supermarket. Xiaohong and Xiaoyu spent 13.15 yuan each