First grade math problems, 10 people do 9 people wrong, don t believe it, you do it!

The actual loss is 97 yuan, 79 yuan for the young man, and the cost of this gift is 18 yuan!So it was a loss of 97 yuan!!This is a simple question, don't ask it in the future

Pay: 100 yuan (because the boss repaid the money, the previous exchange transaction with the neighbor is not a loss) gets: 3 yuan, 21 and 18 yuan difference.

100-3=97 yuan.

Absolutely correct answer.

It's so simple, it's definitely 197 yuan.

First, a loss of 18 yuan. (The cost of the gift is 18 yuan).

Second, give 79 yuan to young people. (79 yuan for the young man) third, 100 yuan for the neighborhood. (You can use a fake 100 yuan bill as an IOU to borrow money from the neighborhood) 18 + 79 + 100 = 197 (yuan).

1. Actual income 100-79 21;

2. Actual expenditure 18 100 118;

3. Losses 21-118 97

97, right? You're confused, right?

The 100 yuan that the neighbor gave to the boss was equivalent to his free get.

Found 79 and left 21

Net profit excluding costs3

Then another 100 was lost

In total, only 97 were lost

Right?

197 lost gifts, 18 more to young people, 79 more, added up to 97, and paid 100 to the neighborhood, a total of 197, isn't it?

It's not a first-grade problem, it's an Olympiad math.

Lost 197 yuan, right? The boss gave the person who bought the thing is 79 plus the cost price of his gift is 18 yuan and 97 yuan, plus he has returned 100 yuan to the neighborhood, and the cost price is 197,

Number of people who get the first question right (25) = only the number of people who do the first question.

Number + number of people who get both questions right (10), here the number of people who only get the first question right is 15, and the number of people who get the second question wrong (18) = the number of people who only get the second question wrong (that is, the number of people who only get the first question right: 15) + the number of people who get both questions wrong.

There are 18-15 = 3 people who get both questions wrong.

Hope it helps.

18-(25-10)=3

25-10 means to count the number of people who got the first question right and the second question got it wrong. 15 people do the first question correctly and the second question incorrectly.

The number of people who get the second question wrong minus the number of people who get the first question right and the second question is the number of people who get both questions wrong. 3 people.

Paid 18 + 100 = 118 yuan.

Got 100-79 = 21 yuan.

Lost 118-21=97 yuan.

79 yuan for young people plus the cost of gifts 18 yuan, a total of 97 yuan.

The neighborhood is just confused, you first give the neighborhood 100 fake, he gives you 100 real, and in the end it is changed back, he gives you 100 fake, you give him 100 real, he has no effect here.

Apparently 97 yuan is easier to understand from the perspective of young people.

This question is very old and not a 2nd grade question at all.

The idea of a collection.

First of all, 25 people were correct in the first question, and 10 of them answered the second question correctly at the same time. That is, there are 15 people who only answered the first question correctly but did not answer the second question correctly.

After that, 18 people answered the second question incorrectly, and 15 people had already concluded that they had answered the first question correctly but answered the second question incorrectly.

Fifteen out of 18 people answered the first question correctly, so there are 3 people who get both questions wrong.