Answer:
The shorter piece is 5 ft long.
The longer piece is 15 ft long.
Step-by-step explanation:
Let's write this into an equation:
(5+2x)+x=20
5+3x=20
Subtract 5 from both sides
3x=15
x=5
The shorter piece is 5 ft long.
The longer piece is 5 feet longer than 2 times 5 ft (the shorter piece).
5+2*5
5+10
15
The longer piece is 15 feet long.
Hope this helped!