There are 28 people in a timber factory. Two workers can process three tables, and three workers can process 10 chairs a day.

2. Solution: Set X-workers to process tables and Y-workers to process chairs.

{X+Y=28

{2X*3:3Y* 10= 1:4

Solve it yourself

It's so simple, you will be familiar with this kind of problem in the future. Remember this question. The method is as follows: set unknown from the problem. If there are x people making chairs, there will be 28-X people making tables, because if four chairs are to match a table, it means that the number of chairs must be four times that of tables, so that they can be matched reasonably, so it matters.

10*X/2 is the number of chairs made every day, and (28-X)*3/2 is the number of tables made every day. Finally, it is enough to divide the two formulas into integer multiples of 4 by using the quadruple relation. Write it down in your notebook and simplify the formula to

10X/(28-X)*3=4n(n is an integer and x is an integer, because people must be integer, not decimal), so it is calculated as 18 people. There is something wrong with your current data. It should be three workers making 10 tables every day instead of two people. If this is changed, it will be the same as the answer you gave. Either you copied it wrong or there is something wrong with the book, my high school math teacher.