Since similar triangles, 60/80=27/2x so 3/4=27/2x, x=81/8.
87 / 60 = (2x + 80) / 80
60 ( 2x + 80 ) = 87 * 80
120x + 4800 = 6960
120x = 6960 - 4800
120x = 2160
x = 2160 / 120
x = 18
Proof: (27 + 60) / (2*18 + 80) = 0.75 60 / 80 = 0.75
