"Uncle, this question is really difficult. ”

Lin Jiajia saw Lin Pengfei looking at the test paper in a daze, so she spoke.

In this math problem, two boys ride a bicycle and start riding in a straight line from two places 20 miles (1 mile or 1.6093 kilometers) apart.

The moment they started, a fly on the handlebar of one bicycle began to fly straight towards the other.

As soon as it reaches the handlebars of another bike, it immediately turns to fly backwards. The fly so goes back and forth, flying back and forth between the handlebars of the two bikes until the two bikes meet.

If each bike is traveling at 10 miles per hour and flies are flying at 15 miles per hour, how many miles have flies flew?

Lin Jiajia racked her brains and couldn't figure out how to solve this math problem.

This is the last and most difficult question in this math mock paper, and it is basically only the top students who have academic performance to solve this question.

Although Lin Jiajia has always been in the top three in the same grade in school, compared with all middle school students of the same grade in Beishan County, the ranking is relatively low, and it may even be ranked outside the top 100.

After all, the best junior high schools in the entire Beishan County are in the county seat.

"The speed of each bicycle movement is 10 miles per hour, and the two will meet in 1 hour at the midpoint of the 20-mile distance, and the speed at which the flies fly is 15 miles per hour, so in 1 hour, the flies have traveled a total of 15 miles, and it is calculated like this......"

Lin Pengfei seriously explained this complex math problem to Lin Jiajia.

"Uncle Pengfei, does he know this question?"

Lin Jiajia looked at Lin Pengfei in shock.

They are all from the same village, although Lin Jiajia is six years younger than Lin Pengfei, Lin Jiajia is also clear about Lin Pengfei's basic situation.

Lin Pengfei didn't finish the first grade of primary school, and he didn't know a few words, how could he have such a difficult math problem.

This really made Lin Jiajia feel incredible.

"Why are you looking at me like that?"

Lin Pengfei, who was explaining math problems to Lin Jiajia attentively, found that Lin Jiajia did not listen to his explanation at all, but looked straight at himself.

"Uncle, did you really only go to elementary school for one year?"

Lin Jiajia asked suspiciously.

Hearing Lin Jiajia's question, Lin Pengfei understood what the problem was, and said with a smile: "There is no way, your uncle and I are talented and intelligent, and I am self-taught in this primary and junior high school culture." ”

Anyway, this bragging is not illegal, Lin Pengfei naturally blew it hard.

"Uncle, you're amazing!"

Lin Jiajia looked at Uncle Pengfei with admiration and said.

I have teachers to teach, as well as a variety of tutorial textbooks, and my school grades are not the best in the school, but Uncle Pengfei relied on his own self-study, and actually learned all the knowledge of junior high school.

Lin Jiajia suddenly felt that Uncle Pengfei was so mysterious!

"Of course, there are three different ways to calculate this math problem, let me tell you about it......"

Lin Pengfei proudly explained this math problem to Lin Jiajia.

In the past, Lin Pengfei felt that it was useless for him to draw this "initial Chinese", but now it seems that it is really too useful.

Especially looking at Lin Jiajia's admiring gaze at herself, Lin Pengfei is more comfortable than eating the corn cob in his own house.

……

With the person you like, this time flies very quickly, and an afternoon in Lin Pengfei feels like it flies by.

Dinner was made by Lin Jiajia, don't look at the girl is only fifteen years old, she has seven or eight years of experience in cooking and cooking, and the food made is much better than Lin Pengfei's craftsmanship.

After Lin Jiajia had dinner with Lin Pengfei in the yard, she went home before it was completely dark.

After all, Lin Pengfei is not fully engaged to Lin Jiajia, and he can't live together at night.

"I really want Lin Jiajia to grow up faster!"

Looking at Lin Jiajia's back of hiring Tingting, Lin Pengfei said to himself.

……

A small community in the county.

"Grandma, this corn is delicious!"

A little boy of five or six years old, with a somewhat thin body, said happily to his grandmother while munching on corn.

This corn is really delicious, and this corn rib soup is also super delicious, Xiaobao really likes it!

"Mom, I also think that today's corn rib soup you made today tastes very good, better than those chefs in five-star hotels. ”

Daughter-in-law Li Xiuli also nodded and said to her mother-in-law.

Because both of them have to go to work during the day, the meals at home are basically made by my mother-in-law, and my mother-in-law's craftsmanship is average, but the taste of this corn rib soup today is really good.

Especially this corn, the taste is so good that Li Xiuli can't even describe it, it is simply a unique delicacy in the world!

"Mom, what did you put in this corn rib soup, I was on duty for a day, and the whole person felt very tired, but after drinking your corn rib soup, the whole person was relaxed and energetic again. ”

Zhang Xiaochen looked at his mother curiously and asked.

really drank this mouthful of corn rib soup, Zhang Xiaochen not only felt super delicious, but also felt that he was full of strength.

It's like taking a panacea, and my whole body is about to fly.

"yes, Mom, what did you put in this corn rib soup?"

was reminded by Zhang Xiaochen like this, Li Xiuli also found that after drinking this corn rib soup, the whole person felt comfortable, and the fatigue after a day of work disappeared.

"It's the same as before, it's salt monosodium glutamate or something. ”

Ma Fangfang said.

"Grandma, this corn is really delicious today, Xiaobao still wants to eat it. ”

While the adults were talking, the child finished the bowl of corn.

"Hehe, grandma will go get some corn again. ”

Ma Fangfang happily went to the kitchen to bring out the pressure cooker and got some corn to put in the bowl.

My baby grandson eats a lot of food, I always dislike my grandmother's cooking is not delicious, today I finally heard my baby grandson praise the corn rib soup he made is delicious, Ma Fangfang thinks that this 100 yuan a corn cob is worth buying!

"Mom, you haven't said anything in this corn rib soup?"

Li Xiuli still asked curiously.

In fact, this corn rib soup not only tastes good, but it feels like a miracle medicine to eat.

"I didn't put anything, the main thing is that this corn is good, today this corn cob is a hundred yuan, not only tastes good, but also very delicious to the body, originally my leg didn't come to a little painful, after eating this corn, I still don't feel pain, this upstairs and downstairs don't feel tired......"

Speaking of this corn, Ma Fangfang was particularly excited.