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Suppose the number of roosters to be purchased = x, the number of hens = y, and the number of chicks = z to get the following two equations.
x+y+z=100
Convert the equation to get the following:
y+z=100-x
Multiply the left and right sides of Equation 2 at the same time to get :
Subtract Eq. 1 from the secondary equation to yield:
8/6z=100+x
Convert the equation to get the following:
z=(100+x)6/8
i.e.: z=(100+x)3 4
Given that z is an integer and 100 is divisible by 4, it can be proved that x is a multiple of 4.
If x is required to be the minimum, then x=4 can be proved
Bringing x into the above equation proves z = 78 and y = 18
That is, 4 roosters, 18 hens, and 78 chicks.
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Huang Xie's answer in the TV series is wrong. Huang Xie's answer in the TV series is wrong. Huang Xie's answer in the TV series is wrong. (Important things are said three times).
According to the plot in the TV series, the roosters are the least, the hens are the second, and the chicks are the most and the more the better (note that the more the better).
The number of roosters to be purchased = x, the number of hens = y, and the number of chicks = z gives the following two equations and one inequality:
x+y+z=100
z>y>x 。。
The merger of the two equations may come out.
z = Since it is to buy live chickens, it can be seen that x, y, z are all positive integers and x can only be a multiple of 4.
Calculate: x=4, y=18, z=78
x=8, y=11, z=81
x=12,y=4, z=84。
According to the plot in the TV series, the roosters are the least, the hens are the second, and the chicks are the most and the more the better (note that the more the better).
So the correct answer is:
x=8, y=11, z=81。。
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Let the equation (1) (2) of the column (x, y, z all integers) be used to buy chicken Weng x chicken Po y chicken chick z (x, y, z are all integers).
x+y+z=100(1)
5/2x+3/2y+1/6z=50(2)
2) Multiply both sides of the equation by 6 to get it.
15x+9y+z=300(3)
3) subtracts (1) to obtain.
14x+8y=200(4)
4) Divide both sides of the equation by 2.
7x+4y=100(5)
From the unit price of Ji Weng Ji Po, it can be seen that x is an even number and y is an even number, which is given by equation (1).
z is also an even number and x y z at the same time
Order x .Solve equation (5) with even numbers to see if there is a matching x and y to obtain when x=4 has a matching y=18, and then bring in (1) to obtain z=78 to satisfy the condition.
x=4 y=18 z=78
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1 is the laziest, 2 is the most diligent, because one does not do two endlessly.
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1, because one does not do two endlessly.
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A man is singing for the audience, singing but why is he always facing away from the audience
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The opening day is in the middle. Answer: Ask.
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It's hard to guess for the answer:
What a car, without wheels.
What a pig that has no mouth.
What a donkey, without hair.
What a book, without words.
What a room, no door.
What flowers, without leaves.
The answer is 6 words, which can be connected into a very romantic sentence, **, see which master can solve it.
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