Answer:
First piece = 4 inch, second piece = 12 inch , third piece = 20 inch
Step-by-step explanation:
Length of the board = 36 inch
Let, the length of the first piece = X
So, according to the question
Second piece = 3 times X = 3x
Third piece = 5 times X = 5X
Now, first piece + second piece + third piece = total length of the board
⇒ X + 3X+ 5X = 36 inch
or, 9X = 36 inch
or, X = 36/9 = 4 inch
So, length of the : First piece = 4 inch
Second Piece = 3X = 3 x 4 = 12 inch
Third piece = 5X = 5 x 4 = 20 inch
