Joke: Math problem in the first grade, 10 people make 9 mistakes, try if you don't believe me.

A topic that is easy to find out the truth. It's easy to lose 100 yuan when you receive a counterfeit banknote of 100 yuan, let alone a primary school student, and everyone who has no education knows it. College students think too much and accidentally walk into a dead end.

Counting, it is easy to finally work out a 97 yuan's answer. The boss lost the gift and 79 yuan, who gave it to the young people, and the change of the neighborhood was helpless 100, 100 even. The cost of the gift is 18 yuan +79 yuan =97 yuan, so you have to leave 97 yuan. It is estimated that this college student must not study economics. Is the gift lost by the boss cost or clearly marked? The value of these three dollars is the income of the boss opening a shop, which is the value created by the boss himself. The value created by the boss is included when it is sold, so the loss of the gift should be calculated according to the marked price: 2 1 yuan +79 yuan = 100 yuan.

The answer given by others is1200 yuan, 97 yuan. I really don't know which angle this has entered. It is estimated that the 100 yuan that the boss later reluctantly returned to the neighborhood is the loss of the boss.

Received 100 yuan counterfeit banknotes. How much did I lose? 100 yuan, still have to ask.

Sometimes, you can see more clearly by paying direct attention to the whole story and the result and ignoring the twists and turns. Sometimes, if you think too much, you will be further away from the truth.