![](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>)
A bus runs 50 kilometers per hour and a truck runs 55 kilometers per hour. The two cars leave from the two places at the same time. When they meet, the truck travels 7.5 kilometers more than the bus. How many kilometers are the two places apart?
Let their meeting time be x hours,
55x-50x = 7.5,
5x=7.5，
x=1.5；
So the distance between the two places is (50 + 55) × 1.5 = 157.5 (km);
A: the two places are 157.5 kilometers apart
A bus runs 50 kilometers per hour and a truck runs 55 kilometers per hour. The two cars leave from the two places at the same time. When they meet, the truck travels 7.5 meters more than the bus How many kilometers are the two places apart
(50+55)*(7.5÷（55-50）)=105*（7.5÷5）=105*1.5=157.5
Distance = speed and * time required to meet
The railway between Party A and Party B is 390 meters long. Two trains leave from the two places at the same time. The fast train runs 80 kilometers per hour and the slow train runs 50 kilometers per hour. There are two trains Come on, before 3:30 on May 2, the number of respondents will be ten more during this time
The railway between Party A and Party B is 390 meters long. Two trains leave from the two places at the same time. The fast train runs 80 kilometers per hour and the slow train runs 50 kilometers per hour. How many hours do the two trains meet after they leave?
390÷（80 +50）
=390÷130
=3 (hours)
The railway is 490 kilometers long. Party A travels 72 kilometers per hour and Party B travels 68 kilometers per hour. When they meet, Party A and Party B travel in each line How many kilometers?
Meeting time: 490 ÷ (72 + 68) = 490 ÷ 140 = 3.5 hours
Then a: 72 × 3.5 = 252km
B driving: 68 × 3.5 = 238km
A railway is 288 kilometers long. Two trains leave from the two places at the same time and travel opposite each other. The train travels an average of 40 kilometers per hour. After 4.5 hours, the train meets the train. How many kilometers does the truck travel an average of per hour? Write it down step by step with the solution of the equation
Suppose the truck speed is x per hour
Speed times time equals distance. So the speed of two cars times their respective time equals the total distance. Draw a picture
4.5X+40*4.5=288
4.5X+180=288
4.5X=288-180
4.5X=108
X=24
A section of railway is 1956 kilometers long. Two trains leave from two places at the same time. The fast train is 85 kilometers per hour and the slow train is 65 kilometers per hour. How many hours does it take for the two trains to l detour
1956 / (85 + 65) = 13.04 hours
RELATED INFORMATIONS
- 1. The railway from Nanjing to Changzhou is 138 kilometers long. An express train and a slow train leave from Nanjing and Changzhou at the same time. It is known that the fast train runs 88 kilometers per hour and the two trains meet in one hour. After meeting, how many hours will the slow train travel to Nanjing?
- 2. The passenger car and the freight car run in the same direction. The passenger car is 150 meters long and the freight car is 250 meters long. If the passenger car speed is twice the freight car speed and less than 20 kilometers, and their passing time is 45 seconds, what are the speeds of the two cars respectively?
- 3. The speed of a passenger car is 60 km / h and the speed of a freight car is 45 km / h. The freight car is 135 meters longer than the passenger car. If the two cars run opposite on the parallel track and the time they spend in the process of meeting is 30 seconds, the lengths of the passenger car and the freight car are ___
- 4. The railway from Shanghai to Tianjin is 1325 kilometers long. A train from Shanghai to Tianjin has been running for 5 hours, just 2 / 5 of the whole journey. Drive like this and arrive in Tianjin in a few hours? (in two ways)
- 5. Train a and train B leave from cities a and B along the same railway line. Train a runs 90km per hour and train B runs 110km per hour 12 hours later, the two cars met. On the map with a scale of 1:6000000, how many centimeters is the railway line long? [I don't understand at all. First (90 + 110) divided by 12?]
- 6. The passenger and freight cars run from Party A and Party B respectively. The passenger car runs 78 kilometers per hour and the freight car runs 60 kilometers per hour. The two cars meet at 18 kilometers from the midpoint of the whole journey. How many kilometers are there in the whole journey?
- 7. A and B are 540 kilometers apart. A bus and a truck leave the two places at the same time. The speed ratio is 5:4. They meet in three hours What are the speeds of passenger cars and trucks?
- 8. Li Yun sat in a train with a speed of 60 kilometers per hour by the window and saw a truck with 30 carriages coming head-on. When the front of the truck passed the window, he began to remember the time. Until the last carriage passed the window, the recorded time was 18 seconds. It is known that each carriage of the truck is 15.8 meters long and the distance between the carriages (including the front) is 1.2 meters, The front of the truck is 10 meters long. What is the speed of the truck?
- 9. An expressway is 336 kilometers long. A passenger car completes the whole journey in 3.2 hours and a truck completes the whole journey in 4.8 hours How fast is the bus faster than the truck?
- 10. The fast and slow trains run opposite each other. The fast train is 50 meters long and the slow train is 80 meters long. The speed of the fast train is twice that of the slow train. If the time for people sitting on the slow train to see the fast train passing through the window is 5 seconds, then the time for people sitting on the fast train to see the slow train passing through the window is 5 seconds______ Seconds
- 11. A train is 200 meters long and passes through a 1800 meter long railway bridge at a speed of 20 meters per second. How long does it take for the train to pass through the bridge? The important thing is the format Both objects of a and B move in a straight line at a uniform speed. The distance a passes through is twice that of B, and the time B moves is 1.5 times that of A. what is the speed ratio of a and B?
- 12. It takes 23 seconds for a train to pass through a 450 meter long bridge and 8 seconds for a worker standing by the railway. What is the speed and length of the train
- 13. How long does it take for a 120cm long train to pass through a 300m long tunnel at the speed of 54
- 14. A train passes through a 900 meter long railway bridge. It takes 1 minute and 25 seconds from the front of the train to the rear of the train. Then the train passes through a 1800 meter long tunnel. It takes 2 minutes and 40 seconds from the front of the train into the tunnel to the rear of the train to leave the tunnel. Calculate the speed of the train and the length of the body
- 15. The two trains come from opposite places of Party A and Party B. passenger cars travel 60 kilometers per hour and freight cars travel 55 kilometers per hour. When two cars meet, passenger cars travel more than freight cars 20 kilometers. What is the distance between Party A and Party B?
- 16. It takes more than 10 seconds for a 72 meter long train to catch up with a 108 meter long truck. If the truck speed is 1.4 times the original, it takes 15 seconds for the train to catch up with and exceed the truck How many meters per second is the speed of the truck? To calculate, think! No equations!
- 17. A passenger and freight car and a freight train run on two parallel tracks respectively, with a passenger car of 150m and a train of 250m Weak 2 trains run towards each other and leave the supply and demand for 10s from the corner of the front to the rear. If the passenger and freight vehicles catch up with the freight train from the rear, it takes 100s from the front to the rear of the freight train to completely exceed the freight train, try to find the speed of 2 trains
- 18. The speed of the freight car is 75% of that of the passenger car. The freight car and the passenger car run towards each other from a and B at the same time, and meet each other after 3 hours. The ratio of the distance between the freight car and the passenger car is __: __
- 19. On a two track railway, two trains cross each other. If the total length of train a is 180m and the total length of train B is 160m, the passing time of two trains is 4 seconds and the speed of train a is 5m faster than that of train B, what are the speeds of train AB
- 20. As shown in the figure, a railway bridge is 400m long. A person walks on the bridge. When he walks 190m away from the bridge head in front, he finds a train coming in the face. The train speed is 40m / s and the train is 800m away from the bridge head in front. How fast can the person run at least to leave the railway bridge safely?