Mathematics to buy and sell onions, buy onions to buy onions, find the correct solution

Finally it becomes 1=2

So the boss must have lost half of it.

The real algorithm is that it should be separated by a pound.

It can't be said that the green onion is white 7 cents a pound.

The green onion is 3 cents a pound.

It should be 7 cents and a half pound of green onions.

The green onion is 3 cents and a half catties (1 catty and so on, this problem is not entangled here.)

You can check the material.

10 taels per pound or 16 taels per catty don't have to worry about this.

Hehe) after separating the catties.

It is. It turns out that 1=1

0 after separation? Of course not.

One pound of green onion white and one pound of green onion green is 2 pounds of green onions.

All at once from the original pound of green onions 1 yuan.

Until now, 2 catties of green onions cost 1 yuan.

Do you say you can not lose half of it, first of all, the boss is stupid.

Sell them separately. He** is.

The green onion is white 7 cents a pound.

The green onion is 3 cents a pound.

Maybe most people think it's okay.

I think that's the case.

But think about it.

7 cents to buy a pound of green onions.

3 cents to buy a pound of green onions.

Other words. For 1 yuan, I bought a pound of green onion white and a pound of green onion.

Then may I ask a pound of green onion white and a pound of green onion.

Is it still a pound of green onions? 5

Secondly, the boss said that it could be sold separately.

But the boss divided the dollar into 7 cents and 3 cents.

But he didn't separate a pound.

Intuitively express it to you.

It turned out to be. One piece = one catty.

Now it is. 7 Mao = one catty.

And. 3 Mao = one catty.

It's a very simple equation.

Originally, it was 1=1

0 after separation?

The main problem here is that 1 yuan per catty is the average price, either more than one yuan per catty, or one is higher than one yuan and one is lower than one yuan, or in any case, it is 1 yuan per catty, which is equivalent to their own price reduction. In the end, 50 yuan buys 100 catties, so if you sell them separately, it is impossible for the average to be equal to or higher than one yuan.

The onion seller is not good at math. Originally, one pound of green onions was one yuan, but after the green onions were sold separately, they became 1 yuan to buy 2 catties of green onions.

Solution: Set the green onion white x yuan per catty, and the green onion green onion y yuan per catty.

If the unit price ratio of green onion white and green onion should be 7 3, that is: x y=7 3 by 50x+50y=100, x y=7 3 x=, y=therefore: the green onion seller should be according to the green onion white per catty.

Yuan, green onions per catty of green onions to sell onions so as not to lose money.

Choose 2 yuan a pound of green onions, one pound of green onions, and one yuan, respectively, buy a pound of green onions and a pound of green onions, then one yuan bought 2 pounds of green onions.

100 catties of onions are sold for 100 yuan, and a catty of onions is sold for one yuan, if a catty of onions is divided into green onions and green onions, then a catty of onions can be divided into white onions and green onions, that is, one yuan is used to sell green onions for a pound of green onions and a pound of green onions for yuan, on the other hand, it is a pound of green onions for yuan, and a pound of green onions for yuan, so you should choose 1 quick money for a pound of green onions, and decompose it out, it should be a pound of green onions for fast money, and a pound of green onions for a dollar.

This is because it was originally 1 yuan per pound of green onions.

If it is sold separately, it is a pound of green onion 7 cents (less than 1 yuan), a pound of green onion 3 cents (less than 1 yuan), and the sum is 1 yuan, but the weight is indeed 2 catties.

That is to say, to sell separately, the average ** is 1 2 = 05 yuan catty.

If he wants to reach the original 1 yuan per catty, at least the green onion white should be greater than 1 yuan per catty, according to his proportion.

It should be 1 yuan and 4 corners of green onion white, and 6 corners of green onion.

Because the green onion is white. With green onions, it is 1 yuan and 1 towel. And he sells 7 cents and 3 cents separately. 7 plus 3 equals 1 yuan. Multiplicative binding rate (as it seems to be called.) Forget) 1 yuan multiplied by 50 catties equals 50 yuan.

How did (3+7)*100 become 3*50+7*50? The multiples have changed, and of course the result will be wrong.

There was a guy who went to buy green onions.

Ask how much is a pound of green onions.

Said the man who sold green onions.

Yuan. Catty. This is.

Catty. To end. Yuan or mu. The man who bought the green onion asked again.

Green onion white and green onion are sold separately.

Said the man who sold green onions. Sell. Green onion white.

Hair. Verdant. Hair. The people who bought the green onions bought it.

Weigh the green onion white.

Catty. Verdant. Catty. The last count is white.

Amount. Yuan. Verdant.

Amount. Yuan. Amount.

Yuan. The person who bought the green onion shirt and carried the forest gave it to the person who sold the green onion.

Yuan is gone. And the man who sold the green onion wondered.

Why do you want to sell it.

Yuan of green onions. And the guy who bought the onion why.

Yuan bought it?

Why do you say that?

1 yuan a pound refers to whether it is green onion white or green onion is a dollar a catty, when he bought green onion white and green onion separately, green onion white 7 cents, green onion green 3 cents, in fact, its weight is no change, but the unit price has changed in the hidden head, green onion white received less than 3 cents per catty, green onion received less than 7 cents per catty, so in the end 50 yuan was bought. This one?

The main problem here is that 1 yuan per catty is the average price, so if it is sold separately, in any case, it will either be 1 yuan per catty, or more than one yuan per catty, or one is higher than one yuan and one is lower than one yuan, and absolutely not both are lower than one yuan, so that the average number is impossible to be equal to or higher than one yuan, which is equivalent to their own price reduction. In the end, 50 yuan bought 100 catties, which is equivalent to a price reduction of 5 cents a catty.

Forget about the advance rate of yuan, angle, and minute.

Let me tell you the most accurate answer.

In fact, it was the loss of a unit that caused a fainting of this limb. If the unit is "one", there will be no so many problems.

One hundred catties of green onions are separated from fifty catties of green onions and white rotten socks and fifty catties of green onions, which seem to be very normal when they are added, but in fact, when they are disassembled, the weight of green onions accounts for the weight of green onions, and on the contrary, the weight of green onions also accounts for the weight of green onions, so it is common sense that the price of 50 pounds of green onions is 50*, but we buy green onions, so we have to take the weight of green onions to the green part, and make up for the weight of the other 50 pounds of green onions, so the actual price of green onions is 50*. In the same way, green is 50*. Got it.

If you buy it like this, in general, the quality has been halved, but ** has not changed, so ** has been halved.

The price is not right. When green onion white + green onion = 100 yuan, they are only half a catty each.