Xiao Ming and Xiao Li are running on a 400 meter track. It takes Xiao Ming 5 minutes and Xiao Li 8 minutes How many parts of the distance did they run per minute? How many meters did they run?

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• 1. Equation: Xiaoli and Xiaoming are on the 400 meter circular track. Xiaoli runs 220 meters per minute and Xiaoming runs 280 meters per minute. They run in the opposite direction at the same point at the same time. How many minutes do they meet? Lie equation: 2. In the flight model competition, the first model plane flies 480 meters less than the second model plane. It is known that the speed of the first model plane is 1 m / s faster than that of the second model plane. The flight time of the two model planes in the air is 12 minutes and 16 minutes respectively. How much distance did the two model planes fly?
• 2. Xiao Li, Xiao Ming is practicing running on the 400 meter circular track, Xiao Li 1. Run 220 meters per minute, Xiao Ming run 280 meters per minute. They run from the same starting point at the same time and meet each other for the first time in a few minutes? If they run in the same direction, they meet each other for the first time in a few minutes 2 if the solution of the equations 3x + y = 2K, 2y-x = 3 satisfies x1, find the integer solution of K The sum of the values of X and Y satisfying the equations 3x + 5Y = m + 2,2x + 3Y = m is equal to 2, and the value of m2-2m + 1 can be obtained Xiao Li and Xiao Ming practice running on the 400 meter circular track. Xiao Li runs 220 meters per minute and Xiao Ming runs 280 meters per minute. They run in reverse from the same starting point at the same time. They meet for the first time in a few minutes? If it's running in the same direction, the first meeting in a few minutes? Solution of a series of equations
• 3. On the 400 meter circular track, Zhang Qiang runs 320 meters per minute, and Li Na runs 280 meters per minute. Zhang Qiang and Li Na start from the same direction at the same time. When they meet for the first time in t minutes, it is t=______ ．
• 4. Xiao Li and Xiao Ming walk from the same place at the same time. Xiao Li walks 40 meters every minute. After three minutes, Xiao Li and Xiao Ming are 270 meters apart. Xiao Ming walks every minute How many meters? Xiao Li and Xiao Ming come from two places 310 meters apart. Xiao Li walks 40 meters every minute. Xiao Li walks one minute first. Xiao Ming meets Yu Xiao Li after three minutes. How many meters does Xiao Ming walk every minute?
• 5. Xiao Ming, Xiao Hong and Xiao Li kick 325 shuttlecocks in total. If Xiao Ming takes out six shuttlecocks, it will be as many as Xiao Li. If Xiao Li gives Xiao Hong three shuttlecocks, Xiao Hong kicks twice as much as Xiao Li. How many shuttlecocks do they kick each?
• 6. Xiao Ming and Xiao Li live in the same building. Xiao Ming lives on the third floor and goes up 32 steps every day. Xiao Li lives on the sixth floor. How many steps does she go up every day?
• 7. Xiao Ming and Xiao Li live in the same building. Xiao Ming lives on the fifth floor and Xiao Li lives on the sixth floor. Xiao Ming has to walk 80 steps when she comes home every day, and Xiao Li has to walk () steps when she comes home
• 8. Xiao Li's family lives on the fourth floor. She has to walk 60 steps to get home from school every day. How many steps are there on each floor?
• 9. Xiaoming and Xiaoli compete to climb stairs. When Xiaoming runs to the 6th floor, Xiaoli just runs to the 4th floor. At this speed, when Xiaoming reaches the 21st floor, how many floors can Xiaoli run to?
• 10. Xiao Fang: I've read 3 / 5 of this book. Xiao Li: I've read 4 / 9 of this book. Who can read the number of pages
• 11. Xiaoming and Xiaojun are 2.22 meters tall, Xiaoming and Xiaoli are 2.20 meters tall, Xiaojun and Xiaoli are 2.24 meters tall. Can you calculate everyone's height
• 12. Xiaoli is 140 cm tall. Xiaoqin is 1 / 10 meter higher than Xiaoli. Xiaofang is 1 / 10 higher than Xiaoli. Compared with Xiaofang, () ① Xiaoqin is higher; Xiaofang is higher; they are the same height; they are not sure But the unit is different
• 13. Xiaoli is 1 / 10 higher than Xiaofang, and Xiaofang is 0.13 meters shorter than Xiaoli. How tall is Xiaofang?
• 14. 1. Xiaoli, Xiaoming, Xiaoliang, Xiaofang's average height is 110cm. If Xiaodong's average height is 120cm, what's Xiaodong's height? 2. A and B planes fly out from two cities at the same time. After two hours, the planes meet at 120 kilometers from the midpoint. At this time, the ratio of the distance traveled by the planes is 3:2. What's the speed of the two planes? 3. The goods in the supermarket are sold out in three days. 50% of the total goods are sold in the first day. 210 more goods are sold in the third day than in the second day. The ratio of the number of goods sold in the second day to that in the third day is 5:8. How many goods are sold in these three days? Write to do so, write in plus 10 points
• 15. Xiaohong, Xiaofang and Xiaoli are divided into 55 pieces of sugar. Xiaohong gets twice as many pieces as Xiaofang, and Xiaoli gets the least, but more than 10 pieces. How many pieces of sugar do they get I'll give you more points
• 16. Xiao Fang and Xiao Li jump rope. Xiao Fang jumps 30 times less than Xiao Li. Xiao Fang jumps seven fifths of Xiao Li's. how many times have they jumped? Xiao Fang and Xiao Li jump rope. Xiao Fang jumps 30 times less than Xiao Li. Xiao Fang jumps five seventh of Xiao Li's. how many times have they jumped?
• 17. In the rope skipping competition, Xiao Hong jumped 18 times and Xiao Li 30 times. Xiao Fang jumped more than Xiao Hong and less than Xiao Li, It's a multiple of the difference between the number of rope skipping between Xiao Hong and Xiao Li. Please count how many times Xiao Fang jumped
• 18. Do the same number of questions, Xiaofang 8 points to do 75 questions, Xiaoli 9 points to do 85 questions, who do fast
• 19. In PE class, it takes 30 seconds for Xiaoming to run 100 meters, 12 seconds for Xiaojie to run 50 meters, and 8 seconds for Xiaohong to run 30 meters. Which of the three of them is the fastest?
• 20. In a PE class, the whole class is arranged in four rows (the number of people in each row is equal). The position of Xiaofang row is: the sixth from the front, the seventh from the back. How many students are there in this class?