Three blocks (m1 = 85 kg, m2 = 20 kg, and m3 = 15 kg) are arranged as shown in the diagram below. Blocks 1 and 2 are connected by a light piece of rope that runs across a massless, frictionless pulley. Blocks 2 and 3 are connected by a separate piece of light rope. The inclined plane has an angle of θ = 34° and its surface is frictionless. Determine the acceleration of the system of blocks. Note: the two pieces of rope will not have the same tension.