A clothing store bought a batch of clothes, but the number of pieces sold in the first month was less than half of the total money, and the number of pieces sold in the second month was more than half of the remaining eight pieces. As a result, there are still 20 pieces left. How many clothes did this clothing store buy?

The correct solution is: (20+8)x2- 10=46.

46x2=92

Test: (92÷2+ 10)÷2-8=20.

Detailed explanation: this question uses the reduction method in mathematics. The key to solving the problem lies in the inference of the last 20 blocks. The number of pieces sold in the second month is 8 more than the remaining half, so the remaining 20 pieces are 8 less than the second month's half. Then the number of clothes before the second month is: (20+8)x2=56.

, that is to say

Half of the total sold in the first month is less than 10, and then there are 56 pieces left, so the remaining 56 pieces are equivalent to half of the total, and 10 is even less, so the total is (56- 10)x2=92.