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Party A and Party B go in the same direction from ab. they first meet at 700 meters away from a, and then continue to move forward. They meet again at 400 meters away from B to seek ab
The first time they met was 700 meters at a point, and then they continued to move forward. When a arrived at B, and B arrived at a place, they all returned immediately. The second time they met was 400 meters away from B point. How much was the distance between AB and a place
The first time they meet is 10km away from point a, and then they continue to move forward. After a arrives at place B, they return to the same way immediately, and after B arrives at place a, they return to the same way immediately. The second time they meet is 3km away from point B, and the distance between a and B is calculated
Suppose that the distance between a and B is x km, then x + 3 = 3 × 10, and the solution is x = 27. The distance between a and B is 27 km
RELATED INFORMATIONS
- 1. Party A and Party B are moving at a constant speed from a and B at the same time. The first time they meet is 700m away from point a, and then they continue to move forward. When Party A arrives at place B, Party B immediately stops Back, the second meeting place is 400m away from point B. what is the distance between a and B?
- 2. A and B start from AB and meet at 90km away from a, then arrive at the destination at the same speed, return from the original road, and meet at 50km away from a, and ask the distance between AB and a
- 3. A and B start from a and B at the same time and travel in opposite directions. The two vehicles meet at a distance of 30 km from the midpoint. It is known that it takes 10 hours for a to complete the whole journey and 15 hours for B to complete the whole journey. How many kilometers is the distance between a and B?
- 4. A and B start from AB, and a travels 40 kilometers per hour. B takes 7 hours to complete the whole journey. When the two cars meet, a travels four seventh of the whole journey, How many kilometers is ab distance? All right, give me extra points (base 50 points)
- 5. A and B set out at the same time from two places with a distance of 100 kilometers, facing each other. A travels 6 kilometers per hour, B travels 4 kilometers per hour, a takes a dog, and the dog travels 10 kilometers per hour Until they met. How many kilometers did the dog walk?
- 6. A and B walk from a and B at the same time. A walks 5 kilometers per hour. When they meet, B walks another 10 kilometers to a, and a walks another 1.6 hours to B B how many kilometers per hour?
- 7. If they set out at the same time, a walked 12 kilometers more than B when they met. After meeting, a walked another 4 hours to B B walk another 9 hours to a, find the distance between AB and the speed of a and B
- 8. The distance between a and B is 18 kilometers. Party A and B walk from a and B at the same time. Two hours later, they meet on the way. After meeting, Party A returns to a, and Party B continues When a goes back to a, B is 2 kilometers away from A. find the speed of a and B It is better to set up a linear equation of two variables
- 9. (1) 23 of a is 18, 34 of B is 18. What is the sum of a and B? ② 25% of a number is 15 less than 12% of a number. What's the number?
- 10. Two thirds of the number a is 18. His 25% is 25 less than the number B. what's the number B
- 11. A and B set out from a and B at the same time, facing each other. When they set out, their speed ratio was 3:2. After the first meeting, a's speed increased by 15, B's speed increased by 310. In this way, when a arrives at B, B is still 14 kilometers away from a, so what's the distance between a and B?
- 12. It takes 8 days for Party A and 10 days for Party B to complete a single project. Now, two people work together. Party A has a day off due to illness. How many days does it take to complete the project?
- 13. A project was originally planned to have 35 workers and can be completed in 18 days. Now it is required to be completed three days in advance. How many more workers are needed?
- 14. There are n couples participating in a meeting. Each of them belongs to a chat group for a period of time, which is called group. Each of them and his or her spouse are never in the same group. In addition, every two of them are in the same group once, which proves that if n ≥ 4, then the total number of groups K ≥ 2n Why is there a total number of groups ＞ = 2 + (n-1) (n-2) when a member participates in two groups? Is n = 3 also true in this case? Why is the total number of a member participating in three or more groups > = 2n?
- 15. A bus runs from city a to city B for 60 kilometers per hour. After 2 hours, a truck runs from city B to city a and meets the bus in 4 hours. At this time, the truck runs one third of the whole journey. How many kilometers are there between the two cities?
- 16. A car from a to B can arrive one hour earlier if the speed is increased by 20%. If the speed is increased by 25% after driving at the original speed of 120 km, it can arrive 401 minutes earlier. How many km is the difference between a and B?
- 17. In a long-distance race held in a county, the athletes run 3 kilometers away from the starting point to return to the starting point. The leading athlete runs 310 kilometers per minute, and the last athlete runs 290 meters per minute. How many minutes after the start do the two athletes meet? How many meters away from the starting point when they meet?
- 18. The first time they met at a distance of 90 km from city a, the two cars continued to drive at the same speed and returned to the same road after arriving at the station. How many kilometers was the distance between station a and station B when they met for the second time?
- 19. There are 108 TV sets of model a and B in the electrical appliance store. It is known that the number of model a accounts for 5 / 9 of the total number. Later, model a sold some. Now the ratio of the number of model a to the total number is 13:25. How many TV sets has model a sold?
- 20. The speed ratio of a passenger car and a freight car is 3:2. The two cars leave from station a and station B at the same time. Four hours later, the two cars meet at 30km away from the midpoint, and station a and station B How many kilometers apart?