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(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______ ．
(1) According to the schematic diagram of the main railway line, if you take a train from Harbin to Guangzhou, you should take the Beijing Harbin Beijing Guangzhou line. (2) according to the passenger timetable, you should take train T15 from Beijing to Guangzhou, and the important railway hubs along the way are Zhengzhou and Zhuzhou
Xiao Ming and Xiao Li want to travel on a sailing boat. They are afraid of windless weather. Xiao Ming comes up with a clever plan. They install a fan at the stern of the boat, and they can set sail by blowing against the sails. Xiao Li's real and fake boats can't run. Why
Because the fan acts on the air and the air acts on the fan, maybe the ship is still going in the opposite direction
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
Suppose that the average speed of Xiaoli's car when it returns is x km / h. according to the meaning of the question, we get 841.2x − 45x = 2060. Solving this equation, we get x = 75. After testing, x = 75 is the solution of the original equation. Answer: the speed of Xiaoli's car when it returns is 75 km / h
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
Suppose that the average speed of Xiaoli's car when it returns is x km / h. according to the meaning of the question, we get 841.2x − 45x = 2060. Solving this equation, we get x = 75. After testing, x = 75 is the solution of the original equation. Answer: the speed of Xiaoli's car when it returns is 75 km / h
RELATED INFORMATIONS
- 1. 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?
- 2. 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?
- 3. 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
- 4. Xiao Li, Xiao Hong and Xiao Fang weigh 54 kg, 56 kg and 52 kg, respectively How many kilos are the three of them?
- 5. 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?
- 6. 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
- 7. Xiao Hong: I walked 4 / 3km in 1 / 2H. Xiao Li; I walked 7 / 5km in 2 / 3H. Who can walk fast?
- 8. 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
- 9. 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?
- 10. 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
- 11. Xiaoqiang scored 5 points more than 9 out of 8 in Xiaoli's test. How much did Xiaoli do in math?
- 12. 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
- 13. 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
- 14. Dad works for 5 days and has a rest for 1 day, mom works for 3 days and has a rest for 1 day. On the 1st, mom and dad rest at home at the same time. On the 3rd, they rest at the same time? (it's better to have a formula
- 15. Xiao Hong's mother works 6 days in a row and takes 1 day off, while her father works 5 days in a row and takes 1 day off. On Tuesday, both parents are at home. What day should parents rest next time
- 16. Lulu's father and mother work in different units. October 1 is a day for father and mother to rest together. Father works for three days and has one day off, Mom works for 5 days and takes a day off. How many days do they have to rest together in this month
- 17. Dad takes a day off every 6 days and mom takes a day off every 7 days. If Mom and Dad take a day off at the same time on March 4, what month and day do they take a day off at the same time?
- 18. Since April 1, Xiaoming's mother has a day off every four days, and his father has a day off every six days. When his parents have a full day off, the whole family will go to the park together How many days before Xiao Ming's family can play together? The answer is 4, 12 or 5, 5? Why
- 19. Mother's age is four times that of Xiaoli now, and ten times that of Xiaoli six years ago. Please figure out the age difference between mother and Xiaoli?
- 20. Dad and mom take Xiao Ming to the park and buy a ticket of 17.5 yuan. It is known that an adult ticket is equal to three children's tickets. How much is an adult ticket?