Solution
For this case we can create the following notation:
x = one side
2x = the side of the second side
16= side of the third side
The perimeter for this case is 160 ft
And then we can create the following equation:
160 = 2x + x + 16
And then we can solve for x
160 = 3x + 16
144= 3x
x = 144/3 = 48 ft
Then the shortest side for this case is:
48 ft