"Uncle Sun's shop has closed down, so how can I get the money to pay the accountant?"
The problem is.
Aunt Li was angry and said angrily, "I just want three dou of rice."
Aunt Zhang was also very angry: "Then you are taking advantage!"
Uncle Zhao spread his hands and said, "I only have 900 coins here, so you three can divide it among yourselves."
The three guys looked at each other, they just couldn't tell the difference!
Finally, several victims looked at Cui Xian expectantly.
Many quarreling neighbors also looked at Cui Xian.
After hearing these two cases, Cui Xian burst into laughter.
Isn’t this the most basic thing? The chapter on millet in the Nine Chapters on the Mathematical Art is about settling accounts, and the chapter on hesitancy and failure is about settling accounts.
As long as you have learned modern mathematics, it is easy to solve.
But for the ancients, it would indeed be confusing.
Not to mention the people in front of us.
Even if a great scholar came, he would have to take up a pen and do the calculation first.
It has nothing to do with ability because they have not learned this method of solving problems.
These two seemingly simple cases involve modern mathematics: proportional calculation, linear algebra, market equilibrium, weighted average, quota allocation, and cost sharing.
Under the expectant gaze of his neighbors, Cui Xian thought for a moment and came up with the answer.
What everyone in the alley didn't know was.
In the side yard.
Mr. Dong Lai was stealthily sticking to the courtyard wall, also paying attention to the movements outside.
The servant was sitting nearby washing clothes. Seeing this, he was speechless: "Master, what are you doing?"
Mr. Dong Lai made a soft "hush" sound and lowered his voice and said, "Don't disturb me. Listen carefully."
The servant reprimanded, "What are you listening to? Listening to the prodigy kid chatting with the neighbors? Master, eavesdropping is not a gentleman's behavior."
Mr. Dong Lai shook his head, his expression unfathomable: "No, no. This is not a casual chat, but a math problem."
"Although these two questions are not difficult to solve. But even for me, I still need an abacus or a pen and paper to do some deduction."
"And these two questions are still too difficult for an eight-year-old child."
"Wait for me to write down the answer, then go out and help a few neighbors solve the problem, just in front of my obedient disciple..."
Mr. Donglai didn't finish his words.
Outside the alley.
Cui Xian's clear and crisp voice came in: "Aunt Zhang, you should return two and a half dou of rice to Aunt Li's family."
"Uncle Zhao, your three guys should get 375 wen, 300 wen, and 225 wen respectively, based on the hours worked.
The yard was quiet.
The servant looked at Mr. Dong Lai with a strange look. He didn't say a word, but it seemed like he said a lot.
Mr. Dong Lai's face suddenly turned red, and in the end he didn't have the courage to pick up the abacus.
He calculated for a while, then widened his eyes in shock: "All correct! Can this kid do mental arithmetic on the fly?"
The servant stood up, poured out the water in the washtub, and said, "Forget it, sir, let's eat first."
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