Yao Ming is a naughty boy. I didn't listen to my teacher very much since I was a child, and I was lazy in my homework. His biggest hobby is spending money on all kinds of junk food every day. His father looked at the bear, shook his head and sighed, "You love spending money on snacks so much that you should be the owner of the supermarket in the future."

After listening to it, I think my father's suggestion suits him very well. Finally, one day, Ming Ming had his own small supermarket. He wholesales a lot of food and supplies. After displaying the goods, the retail price is clearly marked. But how to set the price? Because Ming Ming was too playful when he was a child, he had little knowledge of mathematics, only knew the most basic addition and subtraction, and didn't know how to calculate the cost and profit at all. Obviously I scratched my head and thought about it. Suddenly an idea came to my mind: I doubled the price of everything, so I wouldn't worry and make money!

This was done, and the price of the goods was quickly completed, and the supermarket of Bear was grandly opened. At first, customers were really in an endless stream. Tao Tao and Hui Hui came to join in, but when they saw the price tag, they ran away without looking back. In the end, even one person stayed. Obviously strange, I hurriedly asked my father, "Why can't my things be sold?"

Dad smiled and said, "Just look at other stores!"

Mingming came to Congcong's shop and saw that although the price of goods was not cheap, a billboard was erected at the door, which read "30% off all goods". Attracted a large number of customers to snap up. Bear thought about it, thinking that since Congcong's store can attract so many people with a 30% discount, why don't I make a bigger discount?

So, when Ming Ming returned to the supermarket, he also took out a sign and wrote a few big characters neatly on it with a brush, "All the goods in our shop will be 20% off."

When Tao Tao Hui Hui heard that the supermarket was having a sale, she rushed to the supermarket like an avalanche. Obviously, he shouted with a loud speaker: "Come on, come on, our store is 20% off, 20% off."

This shout scared the daylights out of Bobo's customers. Someone shouted, "Your stuff was expensive, but now it has to be doubled. It's a black shop!" "

Mingming suddenly collapsed to the ground, with tears in his eyes. He began to regret not being serious at first, and finally understood the true meaning of the sentence "Young people don't work hard". From that day on, Mingming began to turn over a new leaf, study hard again, study math seriously and be an excellent businessman.