![](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 several chickens and rabbits. It is known that there are 18 more chickens than rabbits, and there are 12 more chicken legs than rabbits. How many chickens and rabbits are there respectively
Suppose there are x rabbits, then there are (x + 18) chickens
4X=2（X+18）+12
4X=2X+36+12
2X=48
X=24
The number of chickens is 24 + 18 = 42
A: there are 24 rabbits and 42 chickens
Another solution is as follows
Suppose there are x chickens, then there are (x-18) rabbits
2X=4（X-18）-12
2X=4X-72-12
2X=84
X=42
The number of rabbits is 42-18 = 24
A: there are 24 rabbits and 42 chickens
There are 15 chickens and rabbits in total. There are 46 chickens and 46 rabbits in total. How many chickens and rabbits are there?
There are x chickens and Y rabbits
Then x + y = 15
2X + 4Y = 46 (a chicken has two feet, a rabbit has four feet)
The solution is x = 7, y = 8
A: there are 7 chickens and 8 rabbits
Now the same number of chickens and rabbits live together in a cage. It is known that there are 18 fewer chicken legs than rabbit legs. Q: how many chickens and rabbits are there respectively? How to solve the equation?
Suppose x rabbits
Set X rabbits
4x-2x=18
2x=18
x=9
There are nine chickens and nine rabbits each
There is an old question in Sun Tzu's Suan Jing: chickens and rabbits are in the same cage, with 35 heads on the top and 94 feet on the bottom. How about the geometry of chickens and rabbits
Set X chickens
2x+4(35-x)=94
x=23
So there are 23 chickens and 12 rabbits
RELATED INFORMATIONS
- 1. Today, there are 35 chickens and 94 rabbits in the same cage. Q: the geometric equations of chickens and rabbits and the solutions to the equations, No, please don't Scribble, (please answer before 22:00)
- 2. For slightly complex equations, use equations and list the relations as follows: (1) 50x-3 × 0.8 = 62.6 (2) 24x + 9 ÷ 0.03 = 301.6 (3) my mother bought two teapots and eight water cups, which cost 122 yuan, including 35 yuan for each teapot. Q: how much is each water cup? (4) the canteen brought six baskets of Chinese cabbage and spinach. It is known that the total amount of Chinese cabbage is 48 kg more than spinach, and each basket weighs 36 kg? Wisdom questions 1. June day is approaching. A children's clothing store sells 357 skirts a week, of which 43 skirts are sold every day in the first three days. How many skirts are sold every day in the last four days? 2. If a rectangular classroom is paved with 8dm long floor tiles, it just needs 125. If it is paved with 1m long floor tiles, how many fewer such tiles are needed?
- 3. Math problem (to be solved in elementary school) (it's better not to use equation, but it doesn't matter) In a certain math exam, 52 students in the class took part in five questions, and they just did 181 right questions. It is known that each student does at least one right question, seven people do one right question, six people do all five right questions, and the number of people do two and three right questions is the same, so how many people do four right questions? If a and B are two natural numbers, and a / 5 + B / 11 = 37 / 55, what is the value of a + B?
- 4. The carrying capacity of "Shenqi" is five seventh more than that of "Shenzhou 6". First write the quantity of unit 1, and then write the quantity relation
- 5. The distance between a and B is 672km. A passenger car and a freight car leave from the two places and meet each other at 3.2km. The passenger car travels 120km per hour, and the freight car travels how many kilometers per hour? [equation solution] There are 162 people in factory a and factory B. the number of people in factory a is equal to 1 / 5 of that in factory B. how many people are there in each factory
- 6. Xiaohong and Xiaoqiang start from home at the same time. Xiaohong walks 52 meters per minute and Xiaoqiang 70 meters per minute. They meet at a on the way. If Xiaohong starts 4 minutes ahead of schedule and Xiaoqiang walks 90 meters per minute, they still meet at a. how many meters are Xiaohong and Xiaoqiang's homes apart?
- 7. Use equation or arithmetic to solve the following practical problems, and write the equivalent relation 1. The store shipped 4 tons of apples, 3 / 4 less than 2 times of oranges. How many tons of oranges? 2. An engineering team built a highway. It was 38 meters in the first day, and 40 meters in the second day. The second day more than the first day, it was 1 / 28 of the total length of the road. How many meters is the total length of the road?
- 8. Write the quantity relation according to the condition The water pipe has been repaired 3 / 5 a day 2. A pile of coal uses the remaining 2 / 3 In the question: 11 / 15 times 3 and 3 times 11 / 15 have different meanings, but the results are the same?
- 9. Write the quantitative relation according to the meaning of the question (1) There were 46 passengers on the train. After arriving at station a, some of them got off. There were 8 passengers coming up. Now there are 50 passengers on the train. How many passengers are going down from station a? (2) The fruit shop shipped 25 cases of apples and 32 cases of pears, weighing 1870 kg. It is known that each case of apples weighs 30 kg. How many kg does each case of pears weigh? (3) The bottom of the triangle is 3 meters and the area is 12 square meters. How high is it? Can you describe it in words? A ship with diesel can use up to 6 hours, when the wind, 30 kilometers per hour. When driving back against the wind, the distance per hour is 80% of the downwind. How far should the ship go before it goes back?
- 10. There were originally a passengers on the bus, B passengers on the way down and 3 passengers on the way up. Now there are () passengers on the bus
- 11. In the same cage, there are 35 chickens and 94 feet
- 12. How much is the difference between 35 heads and 92 legs
- 13. The number of chickens and rabbits is the same. The total number of legs of the two animals is 48. How many chickens and rabbits are there respectively? (solving the equation)
- 14. Children, have you ever heard of the problem of "chickens and rabbits in the same cage"? The number of chickens and rabbits is the same. The total number of legs of the two animals is 48. How many chickens and rabbits are there respectively? Using equation and equivalent relation
- 15. Chickens and rabbits are in the same cage. There are 20 more chicken heads and 200 more rabbit legs. How many chickens and rabbits are there respectively? (use the equation to solve) Solving the equation of first degree with one variable
- 16. There are 20 chickens and rabbits in the same cage. If there are 4 more chicken legs than rabbit legs, there are () chickens and () rabbits
- 17. Aunt Wang raised many chickens and rabbits. It is known that there are 13 more chickens and 16 more feet than rabbits. How many chickens and rabbits are there?
- 18. When solving practical problems with equations, the quantities on both sides of the equation must be ()
- 19. Please do me a favor, a math problem, with equation solution! For a job, it takes 12 days for a to do it alone, and 20 days for B to do it alone. Now, after a few hours, the rest is done by B, and B completes it. If B does 4 days more than a, how many days has a done?
- 20. 0.8x + 0.9 = 2 x + 5 + 0.3 0.3-0.2x 3 / 3 x + 2 minus 1 = 7x-3 / 5 + 2 / 15 (X-2) 0.2 x + 4-0.5 x-3 = - 1