![](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>)
There are two kinds of trucks. Car a can load 6 tons of coal each time, and car B can load 8 tons of coal each time. There are 400 tons of coal at present, which are required to be transported at one time, and each truck can be transported at the same time It's just full. How many trucks do you need? Requirements: column equation, column formula are OK, as long as the reason, the process to be listed
The binary linear equation is listed: suppose x cars of a and Y cars of B are needed, then 6x + 8y = 400, and then the integer solutions of X and y are obtained. By changing the equation: y = 50 - (6x △ 8), the corresponding values of y can be obtained when x = 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, so there are 17 groups of solutions
There are x vehicles of a and Y vehicles of B
We can get 6x + 8y = 400
The solution is x = 0, y = 50 or x = 4, y = 47 or x = 8, y = 44 or x = 12, y = 41 or x = 16, y = 38 or x = 20, y = 35 or x = 24, y = 32 or x = 28, y = 29 or x = 32, y = 26 or x = 36, y = 23 or x = 40, y = 20 or x = 44, y = 17 or x = 48, y = 14
You can make a list
A 60
B 5
The passenger car and the freight car start from the two places at the same time and travel in opposite directions. The passenger car travels 5 kilometers more per hour than the freight car. When they meet, the passenger car travels 14 / 27 of the whole journey
How many kilometers are there between a and B?
If 5 × 4 = 20 km, the passenger car will travel 20 km more than the freight car
1-14 / 27 = 13 / 27, then the truck runs 13 / 27
20 ÷ (14 / 27-13 / 27) = 540km
A: the distance between a and B is 540 km
Brother Qiushan, I don't know
5 × 4 △ 14 / 27 - (1-14 / 27)] = 20 △ 1 / 27 = 540km
How many times can b transport more goods than a? How many times can B complete the shipment?
18 × (1 + 13) = 18 × 43 = 161 △ 16 = 6 (Times) a: Vehicle B can transport 16% of the goods each time, and vehicle B can transport the goods 6 times
There are two kinds of trucks, car a can load 6 tons of coal each time, car B can load 8 tons of coal each time. There are 146 tons of coal at present, which are required to be transported at one time, and each truck is full. How many trucks do you need?
Suppose you need x cars a and Y cars B. according to the meaning of the question, you can get the equation: 6x + 8y = 64. The equation can be transformed into y = 32 − 3x4. Because X and y are integers, 32-3x must be a multiple of 4. Because 32 is a multiple of 4, 3x is also a multiple of 4. So when x = 4, y = 5, x = 8, y = 2. A: you need 4 cars a, 5 cars B, or 8 cars a and 2 cars B
The bus and the truck leave from a and B at the same time. The bus travels 60 kilometers per hour, and the truck travels 1 / 12 of the whole journey per hour. When they meet, the bus and the truck will stop
The ratio of the distance traveled by passenger cars to freight cars is 5:4. How many kilometers are there between the two places?
Because the travel ratio of two cars is 5:4 when they meet, and the time is equal, the speed ratio of passenger car and freight car is 5:4
Because the bus speed is 60, the train speed is 60 / 5 * 4 = 48
Because the hourly travel distance of freight cars is 1 / 12 of the whole journey, the distance between the whole journey is 48 * 12 = 576
So the distance between the two places is 576 meters
When we met, the truck went: 4 / 9) / (1 / 12 = 16 / 3 hours
The whole journey of the bus: 16 / 3) / (5 / 9 = 48 / 5 hours
Distance: 60x48 / 5 = 576km
60 * 4 / 5 / (1 / 12) = 576km
A: the distance between the two places is 576 km
Three cars carry a batch of goods. Car a carries two seventh of this batch of goods. Car B carries 100 pieces more than car A. car C carries 170 pieces,
If there are x pieces in total, then there is equation
Suppose: there are x pieces in total
（1-2/7-2/7）X=170+100
3/7X=270
X=630
A: there are 630 pieces in total
2/7x+100=170
2/7x=170-100
2/7x=70
x=70÷2/7
x=245
Party A and Party B transport concrete by two trucks, Party B transport concrete by eight times, party a transport concrete by five times, party a transport concrete by 1.6 tons more than Party B each time, party a transport concrete by 10 tons less than Party B at the time of settlement
How many tons can b transport each time?
A5 B8 A-B=1.6
8B-5A=10
5A-5B=8
5A+8B 5A+5B = 18
3b=18 B=6 A=7.6
7.6 5 = 38
6 8 =48
A = 7.6 B = 6
A: Vehicle B transports 6 tons each time.
Set car B to transport x tons each time. Then car a will transport x + 1.6 tons each time. 8X—10=5（X+1.6） X=6
So car B transports 6 tons each time
Passenger cars and freight cars leave from a and B at the same time. Passenger cars travel 60 kilometers per hour, while trains travel 1 / 15 of the whole journey per hour. When they meet, the distance ratio of passenger cars and freight cars is 5:4. How many kilometers are there between a, B and B?
5+4=9
4/9÷1/15 ×60÷ 5/9
=400÷5/9
=720km
Meeting time: 4 / (5 + 4) △ 1 / 15 = 20 / 3 (hours)
A. B. distance between the two places: 60x20 / 3 △ 5 / (5 + 4) = 720 (km)
Let's meet in X hours
x/15=4/(5+4)
x=20/3
Distance = 60 × 20 / 3 △ 5 / 9 = 720km
For a batch of goods, a and B can complete 56% of this batch of goods in 6 days. If they are transported alone, it takes the same time for a to complete 13 and B to complete 12______ Day B: Yes______ Day
A. The work efficiency ratio of B is: 13:12 = 2:3, the work efficiency of a is: 56 △ 6 × 23 + 2, = 536 × 25, = 118; the work efficiency of B is: 56 △ 6 × 33 + 2, = 536 × 35, = 112; when doing it alone, a needs: 1 △ 118 = 18 (days); B needs: 1 △ 112 = 12 (days); answer: when doing it alone, a needs 18 days to complete; B needs 12 days to complete
Two trucks are used to transport coal. Car a carries coal five times, car B carries coal eight times, and car a transports 1.6 tons more each time. At the end of transportation, car a transports 10 tons less than car B, and how many tons does car B transport each time?
6 tons
(1.6*5+10)/(8-5)=6
RELATED INFORMATIONS
- 1. A passenger car and a freight car leave from the two places at the same time. The distance between the two cars is 20 kilometers in 4.5 hours. The known speed of the passenger car is 60 kilometers per hour, and the speed of the freight car is 70% of that of the passenger car. How many kilometers is the distance between the two cities?
- 2. When a batch of goods is to be transported to a certain place, the owner of the goods is going to rent two kinds of trucks from the motor transport company. The situation of renting these two kinds of trucks in the past is shown in the table below Now we rent 5 A-type trucks and 6 B-type trucks from the company. We have just finished the goods at one time. How many tons of the goods are there? The first time and the second time Number of goods vehicles of Party A 3 2 Number of vehicles of goods B 4 3 Cumulative tonnage 36 26
- 3. There are two tons of coal in pile a and pile B, 24 tons in pile A. if one eighth of the coal in pile a is put into pile B, then the weight of two tons of coal is equal. How many tons of coal in pile B? The total weight of two barrels of oil is 10.8 kg. Pour a quarter of the oil out of the first barrel and put it into the second barrel for 3.2 kg. At this time, the two barrels of oil are equal in weight. How many kg are the first and second barrels? The weight of the remaining boxes is exactly 3 kg. How much is the weight of each box? It costs 300 yuan to buy 8 big blackboards and 12 small blackboards. One big blackboard costs 2.5 yuan more than two small blackboards. How much does each big blackboard cost?
- 4. The ratio of people in workshop a and workshop B is 5:4. If 21 people are transferred from workshop a to workshop B, their ratio is 2:3. How many people are there in workshop a and workshop B
- 5. There are 640 tons of cement in a construction site. 8 / 3 of the total amount is used in the first time, and the remaining 8 / 3 is used in the second time. How much cement is used in the two times
- 6. A pile of 15 tons of coal is transported in six times, with an average of () / () [fraction] of the pile of Coal Transported each time
- 7. Take 1 / 10 of the apples from box a and put them into box B. at this time, the kilogram of the apples in the two boxes is equal. The kilogram of the apples in Box B is () of the apples in box a Choose. A, 9 / 10 b, 4 / 5 C, 19 / 20. Now
- 8. A pile of cement was transported to a construction site. It took 15% of the total on the first day, 25% on the second day, 15 tons on the third day, and 7 tons left. How many tons of this batch of cement were used?
- 9. The tonnage ratio of a and B is 3:2. A accounts for half of the total amount of coal transported from a to B. how many tons of coal are there in the original B?
- 10. There are 100kg apples in the two boxes. If 12kg apples are taken out of box a and put into Box B, then box a is 4kg more than box B How many kilos each of the two boxes of original fruit
- 11. The transport team transported a batch of rice to the disaster area. In the morning, it took 4 trucks to transport 25, with an average of 20% per truck______ What about the rest of the rice______ The car can't be finished
- 12. When the two vehicles meet, the distance ratio of the two vehicles is 5:4; after the meeting, the truck is 27 kilometers faster than the bus per hour As a result, the two cars arrived at the other side's departure station at the same time. It is known that the freight car has been running for 10 hours. How many kilometers is the distance between a and B?
- 13. 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?
- 14. 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?
- 15. 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
- 16. 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
- 17. 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
- 18. 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
- 19. At this time, the weight of coal in pile B is 8% less than that in pile a?
- 20. 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,