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The speed of a car on the highway is 2km / min, which is four times the speed of a bus. How many meters / min is the speed of this bus? To calculate the formula and answer! If it's fast, you'll offer a reward!
2 △ 4 = 0.5km/min
Xiaoming rides a motorcycle in the same direction as Xiaoguang on the same road. Xiaoming rides four times faster than Xiaoguang. Every 12 minutes, a bus overtakes Xiaoguang,
Every 30 minutes, a bus overtakes Xiao Ming. It is known that the bus starts at the same time every time from the departure station. Question: how many minutes is the interval between two adjacent buses?
60 minutes
Wang Qiang goes to work by bike and drives at a uniform speed. He observes the buses and finds that every 12 minutes a car overtakes him from behind and comes face to face every 4 minutes. If all the cars are driving at the same uniform speed and the departure interval is the same, then does the dispatcher send a car every few minutes?
Suppose every X minutes to send a car, from the question meaning: 12-x = 3 (x-4), 12-x = 3x-12, & nbsp; 4x = 24, & nbsp; X = 6; answer: the dispatcher sends a car every 6 minutes
RELATED INFORMATIONS
- 1. On the same road, Xiaoming rides in the same direction as Xiaoguang. Xiaoming's speed is three times faster than Xiaoguang's. every 10 minutes a bus overtakes Xiaoguang, and every 20 minutes a bus overtakes Xiaoming. If a bus leaves at the same time from the departure station, then the distance between two adjacent buses is shorter______ Points
- 2. On the scale of 1:2000000, the distance between the two cities is 6cm. What is the actual distance?
- 3. On the map with the scale of 1:2000000, the distance between a and B is 3.6cm. If the car starts from a place at 8 am at the speed of 60km / h, what time is it to arrive at B place?
- 4. On the map with a scale of 1:2000000, the distance between a and B is 18.4cm. The passenger car and the freight car start from a and B at the same time and meet each other in 4 hours. The speed of the passenger car is known to be 40km / h, so the speed of the freight car can be calculated
- 5. In a street, a cyclist and a pedestrian walk in the same direction. The speed of the cyclist is three times that of the pedestrian. Every 10 minutes, a bus overtakes the pedestrian, and every 20 minutes, a bus overtakes the cyclist. If a bus leaves at the same time from the departure station, how many minutes does it leave?
- 6. On a highway, there is a cyclist and a pedestrian. The speed of the cyclist is three times that of the pedestrian. Every six minutes, a bus overtakes the pedestrian, and every ten minutes, a bus overtakes the cyclist. If the departure time interval at the bus departure station remains unchanged, how many minutes does a bus leave?
- 7. Dad runs 1.6km in 8 minutes and Mingming runs 2.4km in 10 minutes. The simplest integer ratio of running time between Dad and Mingming is (), and the ratio of speed ratio is
- 8. When someone runs along the sidewalk on the road, he observes that every 15 minutes a bus comes from behind: every 10 minutes a bus comes from the opposite side. If the speed of the person and the bus remains the same, then every few minutes a bus starts from the station?
- 9. A and B run in the opposite direction from a certain point along a circular track. It is known that a's speed is 80% of B's. after 10 minutes of meeting, they continue to run forward. How many minutes will it take for a to run back to the starting point?
- 10. Xiao Ming was running on the road one day. He found a thing. The bus in front of him comes every ten minutes on average, and the bus behind him catches up with one every fifteen minutes on average. How many minutes does the bus stop send the bus on average
- 11. A car travels 62.5km per hour on an ordinary highway, and the speed on the highway is 90km less than three times the speed on an ordinary highway What's the speed of the car on the highway?
- 12. From the first place to the second place, buses used to take 9 hours. Since the opening of the expressway, the average speed has increased by 40 kilometers per hour, now it only takes 5 hours Hours from a to B. find the distance between a and B
- 13. From a to B, the bus had to travel 7 hours. After the opening of the expressway, the average speed increased by 20 kilometers per hour. It only takes 5 hours to get there______ Kilometers
- 14. A 3.5-meter-long car is driving at a speed of 32 meters per second. In front of it is a 16.5-meter-long truck driving in the same direction at a speed of 27 meters per second. How many seconds does it take for the car to catch up with the truck?
- 15. What is meant by "driving motor vehicles on roads other than expressways and urban expressways without following the prescribed lanes" What are the circumstances of such violation? I hope I can get a specific answer, because I just got punished and I can't remember where I broke the rules
- 16. The total length of an expressway is 150 km, the speed of the car is 50 km / h, and the remaining distance after X hours is y km The functional relationship between Y and X is? Help, can ~ ~ ~ sincerely ask for help
- 17. Someone rides a motorcycle to work from place a to place B. He has to walk 40 kilometers of flat road, 48 kilometers of uphill road and 36 kilometers of downhill road. His speed on the flat road is per hour 20 km, 2 km faster than 1.2 times the uphill speed, and the downhill speed is 1.6 times the uphill speed. How many hours does it take for him to go back and forth? (can you explain each step clearly?)
- 18. The highway from city a to city B is 160 km long. The speed of a car on the expressway is 80 km / h, and that on the ordinary highway is 40 km / h. how much time does it save to take the expressway from city a to city B?
- 19. The distance between a and B is 90 kilometers. How many kilometers does a car leave B after driving from a to B at the speed of 80 kilometers per hour
- 20. The car starts from the station and runs at a speed of 4m / s along the straight road at a uniform speed. After 2S, a motorcycle starts from the same station and accelerates to catch up The car starts from the station and runs at a speed of 4 m / s along the straight road at a constant speed. After 2 s, a motorcycle starts from the same station and accelerates to catch up with the car with an acceleration of 3 M / S2. How long does it take for the motorcycle to catch up with the car after it starts? How far is it from the starting point when the motorcycle catches up with the car?