When I got to the question, An Le took a closer look at the question.

Beer & Beverages

Xiao Zhang invited Xiao Li to his home for dinner. Xiao Zhang knew that Xiao Li loved to use his brain, so he gave him a question: I spent a total of 9.90 yuan on beer and drinks today, guess how many bottles of beer and drinks I bought?

If you guess correctly, I will punish myself with a glass of liquor, and if I guess wrong, I will punish you with a glass. It only took a few minutes for Xiao Li to figure it out, and Xiao Zhang had to punish himself with a cup. Knowing that beer is 1.7 yuan per bottle and drinks are 0.7 yuan per bottle, can you calculate how many bottles of beer and how many bottles of drinks Xiao Zhang bought?

An Le read the question, and after thinking about it for a while, he knew the answer.

"I know, I bought 5 bottles of beer and 2 bottles of drinks."

"So fast, worthy of being a beautiful student." Tao Xuran shouted excitedly.

"That's right, that's right."

Here, Xiao Mian looked at An Le and typed out the answer and said, "You don't know the answer in advance, do you?" ”

An Le looked at Xiao Mian, who questioned her, and then said: "Set up x bottles of beer and y bottles of drinks, according to the question: 17x+7y=99, and divide the coefficient of y by 7 on both sides: 2x+3x/7+y=14+1/7 The transfer item is sorted out: 2x+y-14=(1-3x)/7......

①∵x＞0，y＞o，∴(1-3x)＜0，∴2x+y＜14，x≤6。 To the left of ∵(1) is an integer,

∴ to the right is also an integer. In the range of 1≤x≤6, only x=5 satisfies the condition, so x=5 and y=2 are obtained. That is, 5 bottles of beer were bought, and 2 bottles of drinks were bought.

However, this solution is relatively rigorous, but it is not easy for ordinary people to grasp.

So I have a second solution: because it's 17×6>99, I buy up to 5 bottles of beer. Let's assume that you buy 2 bottles, so the drink must be 9 bottles, and you need to spend a total of 9.7 yuan, and the remaining 0.2 yuan. If you buy 1 more bottle of beer, you will have to buy 3 fewer bottles of drink, and the remaining 0.4 yuan.

If you buy 2 more bottles of beer (that is, buy 4 bottles), you have to buy 6 fewer bottles of drinks, and the remaining 0.80 yuan, plus the original 0.20 yuan for a total of 1 yuan, is exactly the difference between 1 bottle of beer and 1 bottle of drink, that is, buy 1 more bottle of beer, buy 1 less bottle of drink, exactly 9.

"I'll go! Anle, you are so powerful, from today onwards, I will be a fan of you. After speaking, Tao Xuran went to An Le's side.

Xiao Mian saw that An Le was honest and said the answer, so she buried her head in answering the question, but it was obvious that her pen was much heavier.

After the numbers game, the director moves on to the second game.

"Our second game today is to climb the peak, thanks to the mini-game Li Xiyun just now. Xu Yuqing was victorious.

So when you climb the peak, you have your own levels that you can't pass, and professional coaches will go there for you. Tao Xuran's group game is not completed, so you will have to accept the punishment, and the punishment is that you will take Princess Anle and two safety ropes to climb the peak. ”

"I'll go, is the program team playing so big? I don't have insurance!"

"I didn't have insurance either!"

"No, no, director, am I without a safety rope? I'm too pitiful for this princess, isn't it? ”

"No, it's you who follow Ji Chen. Tao Xuran, the three of you went to climb together, and one of them didn't have a safety rope. ”

"Oh, that's it! Can you give me a rope? An Le asked the director weakly.

"We don't have a rope."

"No rope? Well, then, that! Director, should I go and change my clothes? I can't climb in this dress!"

"Well, yes, the program team has prepared the equipment for you."

"Okay, I'll go change my clothes, oh, yes, that, if the director breaks this skirt by me, do you need me to pay for it?"

"Huh? Oh, no, no!"

"Really?"

"Well, no."

"Well, then I'm relieved." Then he heard a bang, and An Le tore off one of the princess dresses.

"I'll go! Anle, what are you doing? Tao Xuran asked An Le.

"Yes, Anle, why did you tear your clothes?" Ji Chen also asked.

"Well, we're not three people, we only have two safety ropes! I tore this strip of cloth down so that I could use it to tie myself to another person with a safety leash, so it would be safer. ”

"Anle, don't worry, we will definitely give you the safety rope."

"Ji Chen, I know, but I think so, because I'm lighter, so I just need to tie up with someone who is also lighter."

"Oh, that's it! Then you and Ji Chen will be tied up later, because my Ji Chen has a lot of weight. ”

"Okay, then that's it, you have a safety rope by yourself, and Ji Chen and I are tied together."

When wearing the safety rope, Ji Chen had to give the safety rope to the second cat, and the second cat couldn't screw Ji Chen, so in the end, Ji Chen was tied to the second cat.

With an order, the two cats began to climb the peak, and when they climbed to a height of five meters, the position of the junction between the climbing wall and the single-plank bridge.

Because the legs of the two cats were too short to reach the single-plank bridge, and the two cats couldn't go up, so Ji Chen and the three of them were stuck on the climbing wall, and the two cats were worried that the longer they were stuck on the climbing wall, the greater their physical strength would be, and they would not be able to climb below, so they said to Ji Chen.

"Ji Chen, you have long legs, you will definitely be able to go up to the single-plank bridge, so wait for the two of us to change positions, you go to the single-plank bridge first, and then you pull me and Tao Xuran up."

Ji Chen listened to the words of the second cat, and agreed with the method as soon as he wanted to change positions with the second cat, and then he saw that the second cat untied the buckle of the safety rope on his body and stuck it on his body.

"What are you doing? Easy. ”

"It's going to be dangerous for you to go up that single-plank bridge, you can't do it without a safety rope, but I can hold on to this climb for at least a minute, so I'm safe, what about you? Just get up to the bridge quickly within a minute and pull me over. ”

"That's not good, how can I, a big man, let you put a girl in danger." Saying that, Ji Chen was going to get the safety rope.

"Ji Chen! I'm telling you, I don't know how to wear a safety rope, the kind that I don't even carry when I die, if you have the ability, you can grind here for a few more minutes, and when everyone can't hold on, jump down and give up the game, but I don't think you're the kind of person who gives up halfway!" The second cat said to Ji Chen in a tough tone.

"It's Ji Chen, An Le is right, you go first, isn't there still me! I'll take care of it. ”

Ji Chen saw that even Tao Xuran said this, so he stopped being hypocritical, and said to the second cat: "Anle, you hold on, wait for me." ”

"Okay, go ahead! Come on!" After the second cat finished speaking, he changed positions with Ji Chen.

Mo Ran, who had been paying attention to the second cat here, saw that Ji Chen actually walked away with a safety rope and said, "Ji Chen, how can he leave Anle and leave by himself?" Anle is not as dangerous as a safety rope. ”

Xiao Mian looked at Mo Ran's worried expression and said angrily: "I care so much about that person named An Le, who are you?" Does she need you to care so much? ”

Mo Ran saw that Xiao Mian was angry, and I didn't say anything for a long time, and then Xiao Mian stopped caring about him and continued to crawl forward.

Because Li Xiyun's group had the help of the coach, they reached the finish line first, followed by Xiao Mian's group, and An Le and they were still stuck in rock climbing, so the camera was aimed at An Le and them.

After Ji Chen arrived at the single-plank bridge, he shouted to An Le: "An Le, come here!"

An Le tried, because her legs were too short, she couldn't reach the single-plank bridge, and finally there was no way, Ji Chen shouted to An Le: "An Le, you jump over and I'll pick you up!"

The second cat looked at the distance between herself and the single-plank bridge, and silently calculated in her heart, it was possible to jump over, but it was a little high and she was afraid.

"No, I'm scared and don't dare to jump."

"Anle, trust me, I'll catch you."

The second cat looked at Ji Chen, who looked confident, and then looked at Tao Xuran behind him, and the other two groups had already completed the game, the second cat felt that he really shouldn't be hypocritical anymore, so he adjusted his position and jumped towards Ji Chen.

The second cat felt a gust of wind blow across his face, and then there was a second of weightlessness, and then he fell into a warm embrace.

"Look! I said I'd catch you!" Ji Chen said to the second cat with a smile.

The second cat looked at Ji Chen's face, and when he looked at Ji Chen up close, he found that his face was so white and tender, thinking that it should be soft to the touch.

But Tao Xuran's shout behind him suddenly pulled the second cat's thoughts back.

"Pull me over, I can't hold on anymore."

"Huh?, thank you! Thank you! You... You pull Tao Xuran!"

After some hard work, the two cats finally completed the brave climb to the peak, and then ushered in the last game of the day to rescue the trapped princess.

The second cat was taken to another venue by the program team after climbing the peak bravely, and then began to chat with 250 and Little Piggy.

"I'm so tired today, I must go to bed early when I go back." The second cat said complaining in his heart.

"Second cat, how did I find out that you are more and more like a pig than a little pig?"

"I feel that this Xiao Mian's hostility towards the second cat is quite big! Do you feel it? 250。 ”

"This heroine and the female partner are born incompatible, and besides, the second cat is so good now, and she has robbed her of the label of a beautiful scholar, she is not hostile to the second cat, who else can she be hostile to? Second cat, you have to pay more attention in the future, maybe Xiao Mian will attack you at some point!"

The second cat didn't pay much attention to what 250 said, but stared at the yogurt on the table and studied it.

"250 Do you think you can drink this?" The second cat asked 250.

"You can't drink it, you can't drink it, but the goddess route you have to take is not the female foodie route, so remember not to drink, never to drink." 250 yelled at the second cat.

"Okay, okay, don't drink, I definitely don't drink, alas, I can't drink just by looking, why do you still put it?"

After the second cat finished complaining in her heart, she began to pick her nails, and she put her hand on the yogurt, and then looked at the staff next to her and asked, "Can you drink this?" ”

"This... Absolutely. The staff replied confusedly.

"I'll go, put it down! Hurry up and put it down for me, do you hear me? Two cats. 250 roared angrily.

The second cat ignored 250 and picked it up, how could there be any reason to put it down, when Ji Chen arrived, what he saw was the second cat wearing a torn skirt and drinking yogurt leisurely.

When the second cat saw Ji Chen, he beckoned Ji Chen to come over and drink yogurt.

"Ji Chen, come on, this yogurt is drinkable, it's delicious!"

Ji Chen looked at the second cat and smiled.

"Why are you wearing this torn dress again?"

"Because I'm a princess! Of course the princess is going to wear a princess dress, but I'm here waiting for you to rescue me! There is also a director who said that the funds are not enough, and he can't buy a new skirt, so he can only make do with this. ”

"Haha, okay! It's actually pretty good. ”

"You won?" The second cat looked at Ji Chen and asked.

"If it's the first one to find you, it's me!"

"Oh......"