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Fast train and local train are expelled from a and B at the same time. The fast train runs 80 kilometers per hour, while the local train runs 60 kilometers per hour. After three hours, the fast train runs 40% of the whole journey How many kilometers are the two cars at this time? Formula!
First calculate the total length of kilometers: (80 × 3) △ 40% = 240 △ 0.4 = 600 kilometers;
Then calculate the distance between the two cars: 600 - (80 × 3) - (60 × 3) = 600-240-180 = 180 km
The express and the local trains run at 80 km / h and 60 km / h respectively. Three hours later, the express runs 40% of the whole journey. How many kilometers are there between the two places?
80 * 3 / 40% = 600 km
The express train from a to B runs 80 kilometers per hour, and the local train runs 60 kilometers per hour. If two trains leave from a and B at the same time
It can meet at a distance of 30 kilometers from the midpoint. How many kilometers is the distance between a and B
80 + 60 = 140 km 140 / 2 = 70 km 70-60 = 10 km 30 / 10 = 3 no unit 140 * 3 = 420 km
Fast and slow trains run in opposite directions from a and B. the fast train is 60 km / h and the slow train is 40 km / h. After a few hours, 80% of the fast trains run in the whole journey and the slow train is 70 km to Jiadi
When the express train runs 80% of the whole journey, the slow train should run 80% of the whole journey × 40 / 60 = 8 / 15
1-8 / 15 of the rest of the slow train = 7 / 15
Whole journey = 70 / (7 / 15) = 150 km
RELATED INFORMATIONS
- 1. Example 3: the fast train and the local train leave from a and B at the same time. It is known that the fast train travels 60 kilometers per hour and the local train 52 kilometers per hour. After a few hours, the fast train meets the local train at the midpoint of 32 kilometers. What is the distance between a and B?
- 2. From a to B, the express train takes 6 hours and the slow train takes 10 hours. Now the two trains leave from a and B at the same time. When they meet, the express train takes 240 km, How many kilometers is the distance between the two places?
- 3. The distance between a and B is 352 kilometers. A and B cars drive from a and B. a car travels 36 kilometers per hour, and B car travels 44 kilometers per hour. B car starts 32 kilometers after a car leaves due to accident. Which car takes more distance from each other to meet? How many kilometers more?
- 4. 1. A and B vehicles leave from two places 420 kilometers apart at the same time, and meet four hours later. The speed ratio of a and B vehicles is 4:3. What are the speeds of a and B vehicles? 2. There are three groups in class 6 (1) to plant trees. Each group plants trees according to the number of people. How many trees should each group plant? There are 16 people in the first group, 14 people in the second group and 18 people in the third group. There are 72 trees in total
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