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A and B piles of coal are the same weight. A pile of coal carries a quarter of its weight, B pile of coal carries a quarter of its weight. What is the weight of the remaining two piles of coal? A: Coal in pile a is heavier than that in pile B. coal in pile B is heavier than that in pile A. coal in pile B is heavier than that in pile A. coal in pile a is heavier than that in pile B. coal in pile B is heavier than that in pile A. coal in pile B is heavier than that in pile A. coal in pile C is
The answer is D, because if both a and B piles of coal weigh 1 ton, then 0.75 tons will be left after transportation, which is the same weight
If the weight of pile a is more than 1 ton, pile B will carry more than 0.25 ton, and the remaining pile a will be heavier than pile B
If the weight of a and B is less than 1 ton, then similarly, the remaining a is lighter than B
D
A car travels 135 kilometers in three hours, and the speed of a plane is 28 times that of a car, which is less than 60 kilometers. How many kilometers does this plane travel per hour?
(135 △ 3) × 28 + 60, = 45 × 28 + 60, = 1260 + 60, = 1320 km; a: this plane travels 1320 km per hour
A batch of cement has to be transported by car. The first time, one third less than three tons of cement has been transported. The second time, one sixth more than six tons of cement has been transported. What is the total amount of 27 tons left
To solve the equation
altogether
=(27-3+6)÷(1-1/3-1/6)
=30÷1/2
=60 tons
G
There are x tons in total;
（1/3)x-3+(1/6)x+6+27=x
x=60
There are 60 tons
There are x tons of cement.
X-(X/3-3)-(X/6+6)=27
X-X/3+3-X/6-6=27
X-X/3-X/6=27+6-3
X/2=30
X=60
A: there are 60 tons of cement
A car has traveled 156 kilometers in the first three hours from place a to place B. at this speed, it takes eight hours from place a to place B. how many kilometers are there between place a and place B? (solve by proportion)
Suppose that the distance between a and B is x km. 1563 = X8 & nbsp; 3x = 156 × 8 & nbsp; X = 416; a: the distance between a and B is 416 km
The two piles of coal weigh 44 tons. When three fifths of the coal in pile a is used and two thirds of the coal in pile B is used, the remaining two piles of coal are the same. How many piles of coal does pile a and pile B have
The original quantity of coal in pile a is x tons, and that in pile B is 44-x tons
x(1-3/5)=(44-x)(1-2/3)
2/5x=1/3(44-x)
6x=220-5x
11x=220
x=20
44-x=24
There were 20 tons of coal in pile a and 24 tons in pile B
A + B = 44
A (1-3 / 5) = B (1-2 / 3)
A + B = 44
A = 5 B / 6
5 / 6 B + B = 44
B = 24
A = 44-b = 44-24 = 20
Let a have X tons of coal and B have y tons of coal
So x + y = 44
2/5*x=1/3*y
The solution is x = 20, y = 24
I fly 780 kilometers per hour, I drive 156 kilometers in 2 hours, how fast is the speed of this car?
780 divided by 156 divided by 2 = 10 times
There are 3000 tons of yellow sand in a sand field, one fifth of which is transported in the first time and one fourth in the second time
How many tons are transported in two times?
3000 × (1 / 5 + 1 / 4) = 1350 tons
A total of 1350 tons were transported twice
How many tons are transported in two times?
3000 × 1 / 5 + 3000 × 1 / 4 × 4 / 5 = 1200 tons, 3000 × 2 / 5 = 1200 tons
A total of 1200 tons were transported twice
A car runs 12 kilometers in two fifths of an hour. At this speed, the car runs from place a to place B for 4 hours. How many kilometers is the distance between the two cars?
How many kilometers is the distance between a and B? If you drive 12 kilometers in 2 / 5 hours, the speed of the car is 12 / (2 / 5) = 30 km / h. If you drive 4 hours, the distance is 4 * 30 = 120 km
It should be right!
A, B two piles of coal, 23 of a pile of coal is just 35 of B pile of coal, known B pile of coal weight 150 tons, a pile of coal weight how many tons?
A: the weight of coal in pile a is 135 tons
How many times the speed of a car is 135 kilometers per hour, and how many times the speed of a car is 135 kilometers per hour?
(135 △ 3) × 28 + 60, = 45 × 28 + 60, = 1260 + 60, = 1320 km; a: this plane travels 1320 km per hour
RELATED INFORMATIONS
- 1. In order to transport 450 tons of yellow sand to the construction site, one third of the total amount will be transported in the first time, and two fifths of the total amount will be transported in the second time. How many tons will be transported
- 2. The quality ratio of rice in warehouse A and warehouse B is 5:2. If 20% of the rice is taken from warehouse A and put into warehouse B, then the rice in warehouse A is 12 tons more than that in warehouse B. how many tons of rice are there in warehouse A and warehouse B?
- 3. One third of the yellow sand is used for the first time, and the remaining one fourth is used for the second time. (1) if it is still 18 tons, how many tons are there in this pile? (2) One third of the yellow sand will be used in the first time, and the remaining one fourth will be used in the second time. (1) if it is still 18 tons, how many tons of yellow sand will there be? (2) if it is 22 tons in two times, how many tons of yellow sand will there be? (3) if it is more than 2 tons in the first time, how many tons of yellow sand will there be?
- 4. There are two cups of water of the same quality. For the first time, pour one-half of a into cup B; for the second time, pour one-third of a into cup a; for the third time, pour one-quarter of a into cup B; for the ninth time, pour one tenth of a into cup B. at this time, how much is the water in cup B?
- 5. There are 6 tons of cement, 6 tons of yellow sand and 6 tons of stone on the construction site. Now a kind of concrete is prepared according to the weight ratio of cement, yellow sand and stone 2:3:4,
- 6. A total of 320 tons of coal are planted in the two piles. The weight of pile a is 60% of that of pile B. how many tons of coal are the two piles?
- 7. There are 200 tons of cement in the warehouse. Two fifths of the total are transported in the first time, and the remaining two fifths are transported in the second time How many tons Arithmetic solution
- 8. The weight ratio of grain stored in warehouse A and warehouse B is 8:7. If 14 tons of grain are transported out of warehouse A and 6 tons are transported in warehouse B, then the grain in warehouse B is 14 tons more than that in warehouse A. how many tons of grain were stored in warehouse a?
- 9. The number of people in workshop a is three-quarters of that in workshop B. if 60 people are transferred from workshop B to workshop a, then the number of people in workshop B is two-thirds of that in workshop a How many people are there in workshop a?
- 10. There are 360 workers in a factory, among which the number of female workers is 40 less than 3 times of that of male workers. How many are there in this factory?
- 11. A batch of cement has to be transported by car. In the first time, one-third less than 5 tons of the total cement has been transported. In the second time, one-quarter more than 3 tons of the total cement has been transported. There are 27 tons left. How many tons of this batch of cement?
- 12. There are 72 tons of coal in pile a and pile B. four fifths of the coal in pile a is transported and 75% of the coal in pile B is transported. The remaining coal is exactly the same. How many tons of coal are there in the two piles?
- 13. Party A and Party B transport a batch of cement together. At the end of the transport, party a transport more than two fifths of the total amount of 14 tons, Party B transport more than one fourth, how many tons did party a transport
- 14. A, B and C transported 40% of the total amount of wheat, 150 kg more than B. the weight ratio of B to C was 3:2 How many kilos?
- 15. A and B start from a to B at the same time. It is known that the speeds of a and B are 80 km / h and 60 km / h respectively. If a and B are x km apart, then
- 16. The mass ratio of coal in pile a, pile B and pile C is 2:3:5. The average weight of these three piles of coal is 15 tons. How many tons is pile a less than pile B?
- 17. A batch of goods were transported away for the first time and 78 tons for the second time, accounting for 65% of the total amount. How many tons of this batch of goods?
- 18. How many tons of cement do you need to tow a pile of cement to B pile every time
- 19. If the weight of coal in pile a is 16 less than that in pile B, the following statements are correct: (1) the weight of pile B is 20% more than that in pile a; (2) the weight ratio of pile a and pile B is 6:7; (3) if 112 is taken from pile B to pile a, the weight of two piles of coal will be the same. (4) pile a accounts for 511% of the total weight of two piles of coal A. ①②③B. ①②④C. ①③④D. ②③④
- 20. The transport team went to the warehouse to transport cement. On the first day, 15% of the total cement was transported out, and on the second day, 36 tons of cement was transported in. At this time, the cement in the warehouse was 87.5% of the original. How many tons of the original cement in the warehouse?