Question 717506
Decifer piece by piece

P1: x
P2: 2x
P3: 5x+1
Total 25in

Add all three pieces and set them equal to 25

x + 2x + 5x+1=25
Simplify
8x+1=25
Subtract the 1 from both sides of the equation
8x=24
Divide both sides by 8 to get the x alone
x=3

The question asked you to find the length of each piece, not just x. Take you newly found value and plug it back into the top. Add the three pieces together, they should equal the total length as your check. DON'T FORGET UNITS!

P1: 3 ft
P2: 6 ft
P3: 16ft

:)