Xiaofubao was pampered in the chronology

Liu Changping was worried that Jinbao would ask some strange questions, such as how many stars are there in the sky, which no one could answer, so he hurriedly said, "Wait a minute! My friend, since you want to test Shuting's cultural knowledge, the question must be with a standard answer"

Jin Bao nodded his head twice, "Of course, what I came up with was a calculation problem."

Unexpectedly, what this girl asked was a calculation problem, Xie Shuting couldn't help laughing in her heart, a student in the first grade of elementary school actually stumped herself by thinking of a calculation problem.

Suppressing the sarcasm, she said, "Since it's a calculation problem, I have to memorize the problem, right?"

"Okay, you can remember."

Jin Bao looked at her third brother and asked, "Third brother, do you have a pen and paper?"

"Bring it." Su Wennian took out a pen and a notepad from his backpack.

Because the notebook contained the contents of today's meeting of the production team, he did not hand the entire notebook to Xie Shuting, but tore off a blank page and gave it to her.

In order to write better, Xie Shuting asked Liu Changping to bend down and use his back as a table.

When everything was ready, she said in a relaxed tone, "Let's start writing the questions."

Jinbao slowly said: "Liu Mei is an educated youth who joined the production team in Luohu Village. Her parents gave her 30 yuan before the trip. Her monthly living expenses were five yuan. The work points she earned every day in the production team It's six points, and the work points for male educated youths in the same period are ten points, and they can get forty cents a day..."

Everyone listened curiously.

Xie Shuting thought to herself: She must be asking how much money Liu Mei can save in a year, it is simply too simple.

Male educated youth earns [-] cents a day for ten work points, while female educated youth earns [-] cents, that is, four divided by ten, and then multiplied by six, twenty four cents, one month is...

Xie Shuting did some mental calculations. The money she earns a month is 26 yuan, minus the expenses of 30 yuan, and the remaining 56 yuan is [-] cents a year, plus the [-] yuan from her parents. One or forty cents is really a question posed by elementary school students.

Just when she was complacent and about to speak the answer, she did not expect that Jin Bao's next question was completely different from what she thought.

Just listen to Jinbao continue to say: "Liu Mei rides a bicycle to the rural credit cooperatives in the town to save money every month. It is known that the five-year fixed interest rate of the credit cooperatives is 8.28%. She deposited the 30 yuan given by her parents for five years. Years, and then five years of zero deposit and lump sum withdrawals, depositing all the remaining money every month, may I ask, how much money will Liu Mei be able to withdraw from the credit union after five years?"

"What round?" Xie Shuting was a little confused.

Jinbao explained: "Piece deposit and lump sum withdrawal is a way of deposit, depositing a fixed amount of money every month, and then withdrawing the money all at once."

After Xie Shuting finished memorizing all the questions, Liu Changping held it in his hand and looked at it, thinking that it would be easy to save 30 yuan for five years, that is, 30*(1+5*8.28%)=42.42, but how to calculate zero deposit and lump sum withdrawal?
"You high school graduates must be very good. Such a simple math problem should be solved in half an hour, right? If you can't figure it out, you will lose."

As soon as Jinbao finished speaking, Liu Changping asked anxiously: "You didn't say how much the interest is for zero deposit and lump sum withdrawal? There is one missing condition."

"Ah? Of course you have to figure it out. If I tell you, this question would be too simple."

"This..." Liu Changping frowned.

Jin Bao's voice was soft and waxy, "Brother, although you are sister Xie Shuting's friend, you can't help her calculate the answer, she has to figure it out by herself. If I lose, she will take everything from my family." The chickens were all taken away."

Liu Changping had a troubled expression, "Your question is too..."

"Is there any problem with my question? It must have a standard answer, right?"

"Although there is a standard answer, it's too tricky and too difficult. If you save it for 5 years, you'll be sick..."

Before Liu Changping could continue, Su Wennian smiled and said, "My sister's question is not difficult at all. I can figure out the answer in five minutes."

The other educated youths present looked at each other in blank dismay at this moment, thinking that this question could be solved in 5 minutes?how is this possible?His cowhide is also blowing too much, right?
Someone doubted: "You told your sister about this question before, of course you can figure it out, you already know the standard answer."

Before Su Wennian could speak, Jin Bao said, "This topic was just something I thought about casually, it wasn't told to me by my third brother."

"What did you think? How could you come up with such a topic at such a young age?"

"What's so difficult about it? My father often goes to rural credit unions, either withdrawing money or depositing money. I would think that this question is normal, right?"

After the little girl's words fell, Luo Zhongqiang raised his hand and said, "I testify that Comrade Su Jianmin really likes to go to the credit union, unlike me, I like to keep money in my pocket, and I feel that it is not safe to put it in the bank."

After hearing what he said, everyone thought that Su Jianmin often took his daughter to the bank, no wonder Jin Bao could think of such a problem as saving money.

They are all very curious, how much money can be saved in credit unions for 5 years?
Xie Shuting was staring at the question and frowning, how to calculate this question?

Save two yuan a month for five years, that is, save for sixty months...

Didn't she want to count 60 times?
Jin Bao smiled and said, "If you can't figure it out, then admit defeat. If you admit defeat now, you just need to apologize to my fourth brother and forget about doing chores."

Things have come to this point, with so many people around staring at him, how can he admit defeat now?Xie Shuting felt that she couldn't afford to lose face.

She snorted, "Wait, I will definitely calculate it within half an hour! Isn't it just 60 times? My arithmetic ability is very strong!"

Speaking of this, she asked: "Can I borrow a desk? There is no place to write, how can I count?"

"Okay, you come to my house to count. After you sit down, I will start timing."

Seeing Xie Shuting walk into the Su's house, all the spectators wanted to know the result, so they couldn't help but follow in together.

There was a crowd of people around the Su family's dining table, they were laughing and talking.

"This educated youth is pretty good, I can't even understand what Jin Bao said, haha..."

"Look, what are these things she wrote? It's like a pile of ghostly symbols."

Luo Zhongqiang and the villagers explained: "These numbers are counted, not ghost symbols, the cross is the multiplication sign, and the parenthesis next to it..."

"Ah Qiang, you are even more powerful. Sure enough, after going to the town for three years of elementary school, the department is different! But what is the line in the middle of those two circles?"

Luo Zhongqiang stared at "%" for a while, "I have never seen this symbol before."

Xie Shuting thought to herself: I haven't even seen the percent sign, what a bunch of illiterates.

She had to solve this problem today!Let them see that after studying for so many years, it was not for nothing that they graduated from high school!