My Pearson test question

Question

A flower is in the same shape of a triangle with one side twice the length of the shortest side and the third side is 11 feet more than the shortest side.Find the dimensions if the perimeter is 151 feet.

Answer 1

L=2s T=11+s

2s +11+s +s = 4s +11 = 151

4s = 151-11 = 140

s = 35 feet = smallest side

L=2s = 70 feet = Longest side

T = 11+s = 46 fee = the Third, middle sized side