There are three small carpenters sawing wood, one is16m long, the other is18m long, and the other is 20m long. How long is each part?

According to the meaning of the question, get

The first section:16-1=15 (m); Section 2: 20-2 =18 (m); The third section: 30m.

They have to be cut into small pieces (integer meters) with the same length, so the length of each piece is the common divisor of 15,18,30, which is 3.

A: Each section is 3 meters long.