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When China's train speed was raised for the sixth time, the average train speed was increased from 160 km / h to 200 km / h, an increase of 10%
Increased by (200-160) △ 160 × 100% = 25%
China has successfully completed the sixth railway speed increase. Before the speed increase, the train speed was 160 km / h, it took 10 hours from Beijing to Shanghai, and 200 km / h after the speed increase
How many hours does it take from Beijing to Shanghai
Because the speed was 160 km / h before the acceleration, it took 10 hours,
So the distance from Beijing to Shanghai is: 160x10 = 1600km
Because it's 200 km after the acceleration,
So divide the distance by the speed: 1600 △ 200 = 8 hours
(the text part is explanation)
RELATED INFORMATIONS
- 1. The train speed on the main line has increased from an average of 160 km / h to an average of 200 km / h. what is the speed of the train after the speed increase?
- 2. Since 1997, China's railways have been speeding up for many times. There is a train that used to run 80 kilometers per hour. After the speed increase, the speed of this train has increased by 40%. How many kilometers per hour does this train run now?
- 3. On the map with a scale of 1:35 million, the length of the railway from Beijing to Hangzhou is 4.7 cm. How many kilometers is the actual length of the railway? (in two ways)
- 4. A section of railway is 3km long. What's the scale of the map? Is the railway 1.5cm long? Really
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- 9. A highway is 432km long, and a passenger car can complete the whole journey in 4.5 hours; a freight car can complete the whole journey in 5.4 hours. How fast is the speed of the passenger car faster than that of the freight car?
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- 11. For the sixth time, the train increased its speed from 180 km / h
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- 13. The railway from a to B is 675km long. A train leaves from a to B at 5:30pm on the first day, with an average of 45km per hour When does the train arrive at B?
- 14. The length of the railway from a to B is about 1464 kilometers. A fast train from a to B takes five twelfth of the whole journey in five hours. How many kilometers are there from B?
- 15. The speed of the full train is two-thirds of that of the express train. The two trains meet each other six hours after leaving and continue to move forward. The express train is several hours earlier than the slow train
- 16. A and B leave from a and B at the same time. After 5 hours, they meet each other and continue to move forward. After 3 hours, a arrives at B. at this time, B is 240 kilometers away from A. how many kilometers are there between a and B?
- 17. The express train and the local train run from a and B at the same time. After meeting for 3 hours, the two trains continue to move forward at the original speed. The express train runs for 2 hours and reaches B. at this time, the train stops at the same time How many kilometers is the distance between a and B? (arithmetic)
- 18. An express train and a local train run in opposite directions. The length of the express train is 280 meters, and that of the local train is 385 meters. The time for people sitting on the express train to see the local train passing is 11 seconds, so the time for people sitting on the local train to see the express train passing is 11 seconds______ Seconds
- 19. The two trains are facing each other. The express is 280 meters long and the local is 385 meters long. People sitting on the express watch the local run for 11 seconds
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