Answer
The sides are 30, 65 and 40 yards.
Work Step by Step
Let X represent the smallest side.
Twice the length of the shortest side means 2X.
5 yards longer than twice the length of the shortest side means 2X + 5
10 yards longer than the shortest side means X + 10
So, the three sides are X, 2X + 5 and X + 10.
The perimeter is 135, so we can set up the following equation:
X + 2X + 5 + X + 10 = 135
4X + 15 = 135
Subtract 15 from both sides
4X = 120
Divide both sides by 4
X = 30
Since X = 30, 2X + 5 = 65 and X + 10 = 40