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How many kilometers does a car travel per hour
The average vehicle travel per hour is (540-360) / (11-9) = 90 km
It's two hours from 9:00 to 11:00, 540-360 = 180 km in two hours, so it's 90 km in one hour
There are two piles of coal, pile a has 4.5 tons, pile B has 6 tons, pile a uses 0.36 tons a day, pile B uses 0.51 tons a day. After a few days, the remaining tons of the two piles are equal?
Let the remaining tons of the two piles be equal after X days. According to the meaning of the question, we get: 4.5-0.36x = 6-0.51x, 0.51x-0.36x = 6-4.5, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 0.15x = 1.5, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 10. Answer: after 10 days, the remaining tons of the two piles are equal
The bus and the car leave from a and B at the same time and meet in 60 minutes. It is known that the speed of the bus is 2 / 3 of that of the minibus. When the car arrives at a, how many minutes does the bus have to walk to B?
Speed of passenger car: 1 / 60 (1 + 2 / 3) = 1 / 100
Time for small passenger car to complete the whole journey: 1 △ 1 / 100 = 100 points
Bus speed: 1 / 100 × 2 / 3 = 1 / 150 min
The bus has to go: 1 △ 1 / 150-100 = 50 points
Let the distance between a and B be X,
Bus speed = (x / 60) * 2 / (2 + 3) = x / 150
Speed of passenger car = (x / 150) * 3 / 2 = x / 100
The time for the passenger car to arrive at a place = x / (x / 100) = 100 (minutes)
Bus arrival time at B = x / (x / 150) = 150 (minutes)
150-100 = 50 (min)
So it will take the bus another 50 minutes to get to B
The distance for a bus is one hour for a car, because the speed of a bus is 2 / 3 of that of a car, so the time required for the same distance is 60 / 2 / 3 = 90 minutes. The bus takes 60 minutes, and the car takes 40 minutes. It takes 40 minutes for the car to arrive at a. the bus takes 90-40 = 50 minutes to arrive at B
If the speed of the passenger car is a, the speed of the bus is 2A / 3.
The distance between AB is 60 (a + 2A / 3) = 100 a.
It takes 100A / a = 100 minutes for the car to get to a
100 minutes, the bus distance is 2A / 3 x 100 = 200A / 3
The remaining journey time is (100a - 200A / 3) / (2A / 3) = (100A / 3) / (2A / 3) = 50 minutes
The two cities are 360 kilometers apart______________ How many hours did the plane fly?
Supplement: the aircraft completed the whole flight at 360km / h
360/360=1（h）
A: the plane flew for an hour
Where?
The plane's flight speed is 9 kilometers per hour, landing three times, each landing a stay of 30 minutes
Supplement: the aircraft completed the whole flight at 360km / h
360/360=1（h）
A: the plane flew for an hour.
Two downloads, 30 minutes per person, two stops
360 / 60 = 6 (hours)
2 * 30 = 60 (minutes) = 1 (hours)
6 + 1 = 7 (hours)
A: the plane flew for seven hours
Fill in the blanks first.
The speed of the plane is 90 kilometers per hour
360 / 90 = 4 hours
A: Yes......
The distance between the two cities is 360 kilometers. The plane flies 120 kilometers per hour. How many hours did the plane fly?
There are two piles of coal, pile a has 4.5 tons, pile B has 6 tons, pile a uses 0.36 tons a day, pile B uses 0.51 tons a day. After a few days, the remaining tons of the two piles are equal?
Let the remaining tons of the two piles be equal after X days. According to the meaning of the question, we get: 4.5-0.36x = 6-0.51x, 0.51x-0.36x = 6-4.5, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 0.15x = 1.5, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 10
When they set out, the speed ratio of a and B is 5:4. When they meet, a's speed decreases by 20%, and B's speed increases by 20%
When a and B start, the speed ratio of a and B is 5:4. When a and B meet, a's speed decreases by 20%, and B's speed increases by 20%. In this way, when a arrives at B, B is still 10 kilometers away from A. how many kilometers are there between a and B?
The day after tomorrow, I hope you can help me,
When meeting, 5 △ 4 + 5 = 5 / 9 in the whole course of line a, and 1-5 / 9 = 4 / 9 in the whole course of line B
After meeting, a goes to B, and a makes 4 / 9 of the whole journey
After meeting, the speed ratio of a and B is 5 × (1-20%): 4 × (1 + 20%) = 4:4.8 = 5:6
So after meeting, a goes to B, and the corresponding B goes 4 / 9 △ 5 × 6 = 8 / 15
So the total number of B lines is 4 / 9 + 8 / 15 = 44 / 45
Therefore, the distance between AB and ab is 10 (1-44 / 45) = 450 km
The speed of a car is 1.5 times that of a motorcycle. It takes 4 hours for a car to travel 360 kilometers. How many kilometers does a motorcycle travel per hour?
360 ﹣ 4 ﹣ 1.5 = 90 ﹣ 1.5 = 60 (km) a: Motorcycle travels 60 km per hour
There are two piles of coal, pile a has 4.5 tons, pile B has 6 tons, pile a uses 0.36 tons a day, pile B uses 0.51 tons a day. After a few days, the remaining tons of the two piles are equal?
Let the remaining tons of the two piles be equal after X days. According to the meaning of the question, we get: 4.5-0.36x = 6-0.51x, 0.51x-0.36x = 6-4.5, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 0.15x = 1.5, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 10
When a and B start from AB, the speed ratio of a and B is 5:4. When a and B meet, a's speed decreases by 20%, and B's speed increases by 20%. In this way, when a reaches B, B is still 12 kilometers away from a, and the distance between a and B is calculated
Good answer, I'll add a reward. There should be a formula
The distance between a and B is x km
[4/(5+4)x]/[5×(1-20%)]=[5/(5+4)x-12]/[4×(1+20%)]
x/9=25x/216-2.5
x/216=2.5
x=540
A. B: the distance between the two places is 540 km
According to the equation of time equality
Distance / speed time
[5 × (1-20%)] and [4 × (1 + 20%)] are the speed after meeting
The tonnage ratio of truck a, B and C is 6:7:4.5. It is known that truck a carries 12 tons more goods than truck C, then the three trucks carry goods together______ Tons
Suppose each share is x tons, then truck a carries 6x tons of goods, truck B carries 7x tons of goods, truck C carries 4.5X tons of goods, and three trucks carry (6x + 7x + 4.5X) tons of goods. From the meaning of the question, we get 6x-4.5x = 12, and the solution is: x = 8, three trucks carry (6 + 7 + 4.5) × 8 = 17.5 × 8 = 140 tons
RELATED INFORMATIONS
- 1. There are two piles of coal, pile a of 4.5 tons and pile B of 6 tons. Pile a uses 0.36 tons a day and pile B uses 0.51 tons a day. After a few days, the remaining coal in the two piles is equal? (solution of equations) Kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka kaka
- 2. The speed of car a is 15 kilometers faster than that of car B. It is known that the speed ratio of the two cars is 5:4. How many kilometers is the distance between city a and city B
- 3. The fast train is 168m, and the slow train is 184m. If the two trains are running in opposite directions, it takes 4 seconds from meeting to leaving. If they are running in the same direction, it takes 16 seconds from the fast train chasing the slow train to leaving,
- 4. At this time, the weight of coal in pile B is 8% less than that in pile a?
- 5. At the same time, the passenger car and the freight car set out from the two places of Party A and Party B, and they went opposite each other. After 7 hours, they met. The speed of the freight car was 9 / 10 of that of the passenger car. How many kilometers did the passenger car travel per hour The distance between the two places is 665 km
- 6. A total of 104.5 tons of goods were transported by the two vehicles, and the goods transported by the vehicle a were 0.5 tons less than that of the vehicle B. how many tons of goods were transported by the two vehicles? It's a lesson in volume two of grade five, four exercises, 92 pages
- 7. The two piles of coal have 1300kg. When the first pile burns 2 / 3 and the second pile burns 5 / 7, the remaining coal is the same. How many kg of each pile
- 8. Passenger and freight cars leave from the two places at the same time. After three hours, they meet. Passenger cars travel 72 kilometers per hour and freight cars 78 kilometers per hour. How many kilometers are there between the two places
- 9. The transport team has to carry 72 tons of goods, 16 vehicles have been carried away, and there is still one ninth of them without dizziness. How many tons of goods are carried by each vehicle on average?
- 10. A and B have 300 tons of coal in total. A transports two fifths of the coal and B transports back two fifths of the coal. Now B has 20 tons more than A. how many tons each of a and B?
- 11. A and B two cars from a and B at the same time, the speed ratio is 4:5, after meeting the two cars continue to move forward, respectively, after arriving at Ba two places immediately return They meet again on the way. If they meet 40 kilometers apart, how many kilometers are AB and ab?
- 12. The total weight of two tons of coal is 2268 kg. Two fifths of coal a and one fourth of coal B are taken out, and the total weight is 708 kg?
- 13. A car carries 42.5 tons of goods five times in the first day, and six times in the second day, with an average of 0.25 tons less than the first day?
- 14. Car a and car B run from a and B at the same time. Car a runs 56 kilometers per hour and car B runs 48 kilometers per hour. The two cars meet at 32 kilometers from the midpoint. How many kilometers is the distance between a and B?
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- 16. It is known that the speed ratio of train a and B is 14:15, and train a runs 56 kilometers per hour How many kilometers are the two stations apart?
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- 19. A fast train and a slow train start from place a to place B at the same time. The speed of the fast train is 126 km / h, and that of the slow train is 126 km / h The speed of the local train is 84 km / h. The express train returns along the original road immediately after it arrives at the second place. When it is 4 hours, the two trains meet. Find the distance between the two places
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