Answer:
18? i don't think it's right but i tried mental math
Step-by-step explanation:
PEMDAS
Answer:
Length of other board
metres
Step-by-step explanation:
Given: Length of board =
metres
Length of board was divided into two.
Length of one piece =
metres
Let
= length of the other board
Length of the other board = Length of board - Length of one piece
So, 

Thus, length of the other board
metres
Two plus ten times eight
(2+10)*8 = 96
The bottom line in the red triangle is 3 units long.
The top line of the blue triangle is 6 units long.
Divide the larger by the smaller to get the scale factor: 6 / 3 =2
The scale factor is 2