![](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 distance between a and B is 60 km, the speed of motorcycle is 40 km / h, the speed of bicycle is 20 km / h, Uncle Li goes from B to a by bike. They start at 8 a.m. at the same time (1) What time did they meet? (2) After meeting, they still advance at the same speed, arrive at land B and land a respectively, and return immediately. At what time do they meet for the second time?
60÷﹙40＋20﹚＝1
8＋1=9
They met at nine o'clock
2. After X, we meet for the second time
20x+40=40x
x=2
2＋9=11
They met for the second time at 11 o'clock
The distance between a and B is 240 kilometers. A car delivers goods from a to B, and it travels at a speed of 40 kilometers per hour
When returning, due to no-load, the car drove at a speed of 60 kilometers per hour. How many kilometers per hour was the average speed of this car? This is a question for grade four. Thank you for your answer,
Time to go: 240 / 40 = 6 (hours)
Return time: 240 / 60 = 4 (hours)
Average speed: (240 * 2) / (6 + 4) = 480 / 10 = 48 (km)
A: the average speed of this car is 48 kilometers per hour
The distance between a and B is 100 km. A car starts from a place to B at a speed of 40 km / h. at this time, a car starts from B place to a place. After that, a car starts from B place every 15 minutes, and the speed is 20 km / h. then the car from a place can meet the car from B place all the way ()
A. 15 B. 10 C. 8 d. not sure
The time of vehicles from land a to land B: T = SV = 100km40km / h = 2.5h = 150min, ∵ there is a vehicle from land B every 15 minutes, ∵ the number of vehicles from land B: n = 150min, 15min = 10, that is: the vehicle from land a can meet 10 vehicles all the way
A passenger car and a freight car leave from station a and station B at the same time. After meeting for 6 hours, the two cars continue to move forward at the same speed. After another 4 hours, the passenger car goes on
It's only a few hours before the lorry reaches the second place
The total bus time is 4 + 6 = 10 hours
One hour line 1 △ 10 = 1 / 10
The speed of freight car is 1 / 10 × 4 △ 6 = 1 / 15
The time for the truck to complete the whole journey = 1 △ 1 / 15 = 15 hours
The truck has to travel 15-6 = 9 hours
A passenger car and a freight car leave from station a and B at the same time. They meet at 6 o'clock. After meeting, the two cars go on at the same speed. The passenger car takes 4 hours to arrive
B. how many hours does the truck have to travel
The total bus time is 4 + 6 = 10 hours
One hour line 1 △ 10 = 1 / 10
The speed of freight car is 1 / 10 × 4 △ 6 = 1 / 15
The time for the truck to complete the whole journey = 1 △ 1 / 15 = 15 hours
The truck has to travel 15-6 = 9 hours
A passenger car and a freight car leave from station a and B respectively at the same time. After meeting for 3 hours, the two cars continue to drive. After another 2 hours, the passenger car arrives at station B. It is known that the freight car travels 60 kilometers per hour, and how many kilometers does the passenger car travel per hour?
Hanying warm for you
60 △ 2 × 3 = 90 km
The speed of the bus is 90 kilometers per hour
(or click "satisfied" in the upper right corner of the client)
It's my motivation to move forward! Your adoption will also bring you wealth value
If you don't understand,
Until the completion of understand this problem!
The distance between a and B is 624km. A bus and a truck run from the two places at the same time. They meet in 6 hours. The bus runs 56km per hour
How many kilometers does the truck travel per hour
Truck speed = 624 △ 6-56 = 48 km / h
RELATED INFORMATIONS
- 1. The distance between a and B is 40 kilometers. A person starts from a place to B at a speed of 10 kilometers per hour. Suppose that the person starts x hours later and is y kilometers away from a place (1) Write the function relation of Y with respect to x, and point out the definition field of function (2) Draw an image of this function
- 2. A car from a to B, planning to travel 40 kilometers per hour, 7.5 hours to arrive, the actual 3 hours to travel 150 kilometers, the actual number of hours to arrive?
- 3. It takes 8 hours for an express train to go from station a to station B, and 12 hours for a slow train. The two trains leave from the two stations at the same time. When they meet, the fast train travels 48 km more than the slow train How many kilometers is the distance between the two stations
- 4. An express train and a local train leave from station a and B at the same time. After 12 hours of meeting, the express train arrives at station B in 8 hours. How many hours does the local train have to go to reach station a?
- 5. The distance between station a and station B is 96 km. The express train and the local train leave from station a at the same time. It is known that the express train is 12 km faster than the local train per hour, The distance between station a and station B is 96 km. The express train and the local train depart from station a at the same time. It is known that the express train is 12 km faster than the local train per hour. If the express train arrives at station B 40 minutes earlier than the local train, the speed of the express train and the local train should be calculated
- 6. The distance between station a and station B is 100 km. A car drives from station a to station B at the speed of 40 km / h, and the other station B starts at the same time every 15 minutes If the speed of a car is 20km / h, the car from station a can see () cars from station B along the way 【A】15 【B】10 【C】8
- 7. The car is 40km / h from a to B, just to the scheduled time. In fact, after 3 hours, the speed of the car is reduced to 30km / h, one hour later than the scheduled time. The distance between the two places is very small
- 8. The two vehicles of Party A and Party B set out at the same time at a distance of 530km from each other. The speed of car a is 30km / h less than that of car B, and the distance between the two vehicles is 2H later 50km, find the speed of two cars
- 9. A and B are going from AB to B at the same time. A arrives at B, and B is 30km away from A. when B arrives at a, a exceeds B by 40km. How many kilometers is the distance between AB and B? Better have an explanation
- 10. AB two cars, the speed is 60km / h and 40km / h, B car set off 40km, a car began to catch up with it, a few hours to catch up?
- 11. The distance between a and B is 264km. The time ratio of freight cars and buses from a to B is 5:6. Freight cars and buses run from a and B at the same time. After 1.5 hours, the two cars meet. How many kilometers do the two cars travel when they meet
- 12. At 8:00 in the morning, a car drove 40 kilometers from place a to place B in the first hour. At this speed, it was one hour later than the original plan. So, the driver changed to drive at the speed of 50 kilometers per hour, and the result was one hour earlier than the original plan. How long is the highway between a and B?
- 13. Solving the equation: at 8 a.m., a car drove 40 kilometers from a to B in the first hour, one hour later than the original plan, so it drove at a speed of 50 kilometers per hour At 8 o'clock in the morning, a car drove 40 kilometers from a to B in the first hour. At this speed, it was one hour later than the original plan. So it drove at 50 per hour, one hour earlier than the original plan. How long was the original plan
- 14. The distance between a and B is 504km. A car drives from a to B in 6 hours. At this speed, it takes several hours to reach B (solve by proportion)
- 15. The distance between a and B is 504km. A car drives from a to B in 6 hours. How many hours will it take to reach B at this speed? (solve by proportion)
- 16. There are 540 kilometers from a to B. a car has been driving 60 kilometers per hour from a to B for two hours. How many hours will it take to reach B
- 17. The distance between a and B is 160 kilometers. A car travels 60 kilometers from a to B in 3 / 4 hours. At this speed, how many hours does it take to complete the whole journey?
- 18. A car drove from place a to place B at a speed of 90 km / h for 3 hours, just half of the whole journey. How many kilometers are there between the two places
- 19. One car drove 160km from place a to place B, which is exactly 4 / 7 of the whole journey. The other car drove 1 / 4 of the whole journey from place B to place a How many kilometers did a and B get together? How many kilometers did the second car travel?
- 20. A ship from a downstream 9 hours to B, the original way back 11 hours to reach a, known water velocity is 2 km / h, find the ship's speed in still water The distance between a and B