Algebra
posted by Jamie on .
The backyard of a house is in the shape of a triangle. The longest side is 4 ft shorter than twice the shortest side. The third side is 4 ft less than the longest side. If the perimeter of the yard is 162 ft, what are the lengths of the sides?

s = shortest side
the three sides are thus
s, 2s4 and 2s44
s + 2s4 + 2s8 = 162
5s = 174
s=34.8
34.8 + 65.6 + 61.6 = 162