A piston compresses air in a cylinder. The face of the piston is 10 sq. inches and this is the same as the inside cross-sectional area of the cylinder. The initial volume of the cylinder is 120 cubic inches. The air is compressed from an initial pressure of 15 lbs per square inch to 200 lbs per square inch during one compression stroke. Using the fact that pressure and volume vary inversely (Boyle's Law), calculate the work the compressor does on one compression stroke.