There are 200 legs of chicken and rabbit. The ratio of head to foot is 2:5 So the ratio of chickens to rabbits is () It's better to explain the summation in one step, and it's better to explain the arithmetic in one step And the teacher talked about this problem in class, because the students didn't hear it, so they only heard a few steps 200 divided by 5 = 40.40 * 2 = 80 I can't hear it in the future, so please explain my teacher's next formula and ideas after you finish your thoughts. Thank you very much

There are 200 legs of chicken and rabbit. The ratio of head to foot is 2:5 So the ratio of chickens to rabbits is () It's better to explain the summation in one step, and it's better to explain the arithmetic in one step And the teacher talked about this problem in class, because the students didn't hear it, so they only heard a few steps 200 divided by 5 = 40.40 * 2 = 80 I can't hear it in the future, so please explain my teacher's next formula and ideas after you finish your thoughts. Thank you very much

The ratio of head to foot is 2:5
Feet account for five points, one is: 200 △ 5 = 40
The number of heads is 40 × 2 = 80
That is, there are 80 chickens and rabbits, the number of feet = the number of legs = 200
Assuming all chickens, there should be 80 × 2 = 160 legs
The extra is because the rabbit has four legs, one is two more than the chicken
（200-160）÷2=20
There are 20 rabbits
Chicken: 80-20 = 60

There are a number of chickens and rabbits. The ratio of the total number of heads to the total number of feet is two to five. What is the ratio of the heads of chickens to rabbits

（2x4-5）÷（4-2）=3÷2=1.5
The head ratio of chicken to rabbit was 1.5: (2-1.5) = 1.5:0.5 = 3:1
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If there are several chickens and rabbits, the ratio of total head to total foot is 3:7, then the ratio of head to total foot is ()

Let X be a chicken and y be a rabbit, (x + y) / (2x + 4Y) = 3:7,7x + 7Y = 6x + 12Y, x = 5Y, and the ratio of head number of chicken to rabbit is 5:1,

There are 10 chickens and rabbits in the cage. How many chickens and rabbits are there in the cage?

There are 4 rabbits and 6 chickens