![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
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?
Suppose the speed of car B is XKM / h, then the speed of car a is (2x + 20) km / h. according to the title, we get 12 (2x + 20) + 12x = 298, and the solution is x = 192.2x + 20 = 2 × 192 + 20 = 404. A: the speed of car a is 404km / h, and that of car B is 192km / h
The speed of car a is 20 km / h faster than that of car B. half an hour later, the two cars meet. What are the speeds of the two cars?
(84-20 * 0.5) / 2 * 2 = 74 km / h
74 + 20 = 94 km / h
A: the speed of car a is 94 km / h, and that of car B is 74 km / h
In addition, please send and click my avatar to ask me for help,
Your adoption is the driving force of my service
The two cars started from two places 84 km apart and went in opposite directions. Car a was 20 km / h faster than car B. after half an hour, the two cars met,
Using the equation of degree one variable,
Let a be x, then the velocity of B is x-20
Then: 0.5 * (x + x-20) = 84
Solution: x = 94
So the speed of a is 94km / h
B's speed is 74 km / h
When car a runs 480km, car B runs 40km less than 25% of the whole journey. The speed ratio of a two car is 4:3. How many km is the whole journey between car a and car B
The distance ratio is equal to the speed ratio, which is 4:3
So a 480 km and B 480 △ 4 × 3 = 360 km
So AB is (360 + 40) △ 25% = 1600 km
RELATED INFORMATIONS
- 1. The two cars run from both places at the same time. When car a runs 164km, it meets car B. This is that car a is 15km away from the center point, and car B runs 48.5km per hour How many hours did car B travel when they met?
- 2. It is known that car a takes 1.5 hours more to complete the whole journey than car B. car a travels 40 kilometers per hour and car B travels 50 kilometers per hour______ The two cars met in two hours
- 3. The distance between the two places is 350 meters. Car a and car B drive from the two places at the same time and meet each other 3.5 hours later
- 4. The distance between a and B is 480 km. Two cars leave each other at the same time and meet each other after 5 hours. One car travels 56 km per hour, and the other car travels how many km per hour?
- 5. The distance between the two places is 280 km. Two cars of a and B leave each other at the same time. They meet two hours later. It is known that the speed ratio of a and B is 4:3. Calculate the speed of the two cars per hour Main formula
- 6. The distance between a and B is 350 km. An express train and a local train depart from the two places and meet in 3.5 hours. It is known that the speed ratio of the express train and the local train is 3:2. What are the two trains?
- 7. The two cars leave from a and B at the same time and meet at 40 km from the midpoint five hours later, What is the speed of the express train and the local train? How many kilometers is the distance between a and B? (using the arithmetic method, not the equation)
- 8. At the party on June 1, class 51 bought 3kg of fruit candy. The weight of fruit candy is 1 / 3 of that of melon seeds, and the weight of fruit is 5 / 2 of that of melon seeds How many kilos of fruit do you buy?
- 9. A group of goods were delivered to the teams a and B according to 5:3. The team transported 48 tons to complete the 45 of the team's task and transferred them. The rest were transported by team B. how many tons did the second team carry?
- 10. The transport team plans to transport a batch of goods within three days. 4.8 tons were transported on the first day, accounting for 40% of the total. The ratio of tons transported on the second day to the third day is 3:5—— In a positive proportion
- 11. A, B students from a to B, a walking speed is 3km / h, B walking speed is 5km / h, two people riding a bicycle speed is 15km / h, now a first walk, B first ride a bicycle, two people start at the same time, walk a distance, B put off to walk, a go to B place to ride a bicycle, then continue to alternate, two people just at the same time to B, find a walk the average speed Please use the equation Just tell me how to make the equation ------------------------------- By 6:00 tomorrow morning The method of solving equations
- 12. The distance between a and B is 305 km. The speed of car a from a to B is 70 km / h. 20 minutes after car a starts, car B from B to a is 60 km / h. how long after car a starts, the distance between the two cars is 65 km?
- 13. 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
- 14. 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?
- 15. 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
- 16. 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
- 17. 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
- 18. 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!
- 19. 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
- 20. 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?