# The length of the board is 5 meters, three pieces were cut from it. The length of the first 1 is 3 \ 20 meters, the second

**The length of the board is 5 meters, three pieces were cut from it. The length of the first 1 is 3 \ 20 meters, the second piece is 8 \ 20 meters longer, and the third is 1 whole 7 \ 10 shorter than the first and the second together. How long is the third piece? What is the remainder length?**

Determine how many meters the length of the second part of the board is equal to:

23/20 + 8/20 = 31/20.

Let’s determine what the total number of meters is equal to the lengths of the first and second parts of the board:

23/20 + 31/20 = 54/20 = 27/10.

Determine how many meters the length of the third part of the board is equal to:

27/10 – 17/10 = 1.

Determine how many meters the length of the remainder of the board is equal to:

5 – 1 – 2.7 = 1.3.

Answer: The length of the third part of the board is 1 meter, and the length of the remaining part of the board is 1.3 meters.