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Car a and car B are facing each other from ab. car a starts 15 minutes earlier than car B. car a travels 20 km more per hour than car B. when they meet, car a travels 55 km more than car B,
Suppose that when Party B walks SKM for the first time, Party A walks 1.5 SKM, and the distance between Party A and Party B is 2.5 SKM. After each meeting, the total distance between the two places increases by 2, that is, 5 SKM. Then, when they meet for the third time, they walk 2 * 5S 2.5s = 12.5 SKM. Because the speed of Party A is 1.5 times that of Party B, Party A walks 12.5s * 3 / 5 = 7.5 SKM, B walked 5skm, and the meeting place was in B. at the fourth meeting, they walked 3 * 5S 2.5s = 17.5skm. Because a's speed was 1.5 times that of B, a walked 17.5s * 3 / 5 = 10.5skm. B walked 7skm. At this time, the meeting place was 0.5s away from a, that is, 2skm away from B, so 2S = 20km, 2.5s = 25km, and AB was 25km away
The speed ratio of a and B is 2:3. When they meet, a walks 6 km less than B. It is known that B walks for 1 hour and 30 minutes. The speed of a and B and the distance between two places are calculated
Suppose that the speed of a and B is 2xkm / h and 3xkm / h respectively. From the meaning of the question, we get 2x · (112 + 14) = 3x · 32-6, and the solution is x = 6, 2 × 6 = 12km / h, 3 × 6 = 18km / h, 12 × (112 + 14) + 18 × 32 = 21 + 27 = 48km. A: the speed of a and B is 12km / h and 18km / h respectively, and the distance between the two places is 48km
RELATED INFORMATIONS
- 1. The two cars start from two places 298km apart and run towards each other at the same time. The speed of car a is 20km / h faster than that of car B. half an hour later, the two cars meet. What are the speeds of the two cars?
- 2. Car a and car B go from AB to ab respectively and meet each other after 9 hours. Car a runs 20 km less per hour than car B. the speed ratio of the two cars is 7 to 9 How many kilometers are the two places apart? Let's explain the formula and method!! *-*
- 3. A and B two cars from two places to each other, a car 56km per hour has 48km per hour, two cars meet at 32km from the midpoint. How many km is the distance between the two places?
- 4. The distance between a and B is 270 km. The bus and the minibus start from the two places at the same time and run in opposite directions. One and a half hours later, the two vehicles are still 60 km apart
- 5. The distance between a and B is 270km. The local train starts from home at the speed of 50km / h, and the express train starts from B at the speed of 60km / h. The two trains are facing each other The slow train leaves for 1.5 hours. How many hours after the slow train leaves, the two trains will meet? The "equation" writes out everything set!
- 6. The two cars leave from two places at the same time and meet each other in three hours. The speed ratio of car a and car B is 5:4, and the distance between the two places is 270km
- 7. A and B leave AB at the same time and meet at 2 o'clock. After meeting, the two cars continue to move forward. When a arrives at B, B is 60km away from A. It is known that the speed of a car is a car A and B leave AB at the same time and meet at 2 o'clock. After meeting, the two vehicles continue to move forward. When a arrives at B, B is 60km away from A. It is known that the speed of B is 2 / 3 of that of a, so find the distance between AB and B! With the sixth grade knowledge, this is from the math paper
- 8. Party A and Party B start from two places 60 kilometers apart and walk in opposite directions at the same time. The walking speed of Party A is 5 km / h, and Party B meets each other after riding for 3 hours to find the speed of Party B. If two people walk in the same direction from two places at the same time, Party A is in the front and Party B is in the back, how many hours will it take Party B to catch up with Party A? The answer is that B's speed is 15 km / h, and it takes 6 hours for B to catch up with a Please use the equation
- 9. A starts from place a by bicycle and B starts from place B by foot. After two hours of meeting each other, it is known that the speed of a is three times that of B, which is more than 2km / h A. B. the distance between the two places is 44km (1) Find the speed of a and B; (2) After meeting, they continue to move forward in their respective directions. How long does it take for a to go back to B and catch up with B?
- 10. The passenger car and the freight car run in the opposite direction from the midpoint of a and B. three hours later, the passenger arrives at a, and the goods are 60km away from B. the speed ratio of goods and passengers is 3:4, and the distance between the two places is calculated
- 11. A and B both leave from two stations 360 km apart at the same time. Car a travels 50 km per hour, 25% faster than car B. a few hours later, the two cars meet?
- 12. A and B leave from a and B, which are 55 kilometers apart. A and B meet after 23 kilometers. After meeting, they continue to move forward and return to each other's starting place immediately. 1. How many kilometers is the second meeting point from B? 2. How many kilometers is the sixth meeting point from a?
- 13. A and B set out from a and B respectively and went opposite each other. When they met, 55% of a's journey was more than 3.5 kilometers. B just walked 12 times of a's journey. How many kilometers did B travel when they met?
- 14. A and B set out from a and B respectively and went opposite each other. When they met, 55% of a's journey was more than 3.5 kilometers. B just walked 12 times of a's journey. How many kilometers did B travel when they met?
- 15. A starts 15 minutes earlier than B. A travels 20 kilometers more than B. when a meets B, a walks 55 kilometers more than B Car B is two hours away
- 16. A and B leave 480 kilometers apart at the same time. A travels 65 kilometers per hour and B 55 kilometers per hour. A few hours later, the two vehicles are 120 kilometers apart
- 17. A and B drive in opposite directions from city a at the same time. Car a travels 55.5 kilometers per hour, while car B travels 34.5 kilometers per hour. After a few hours, the distance between the two cars is 270 kilometers?
- 18. The distance between a and B is 460 km. A passenger train travels 60 km per hour and a freight train 55 km per hour. If the two trains leave the two places at the same time for 3 hours, how many kilometers are there between the two trains?
- 19. The distance between the two places is 250 km. The passenger cars and freight cars start from the two places at the same time. The passenger cars travel 60 km per hour and the freight cars 55 km per hour. How many km are the two cars apart in two hours? (several cases can be worked out)
- 20. There were eight people who took two cars to the railway station. One of the cars broke down 10km away from the railway station. At this time, there were 28 minutes left before the train check-in time. At this time, the only available means of transportation was a car. The average speed of the car was 60km / h and the pedestrian speed was 5km / h. could these eight people catch the train Please write down the specific plan