A 300 ft long roller conveyor, which opperates at a velocity = 80 ft/min, is used to move pallets between load and unload stations. Each pallet carries 12 parts. Cycle time to load a pallet is 15 sec and one worker at the load station is able to load pallets at the rate of 4 per min. It takes 12 sec to unload at the unload station. Determine (a) center-to-center distance between pallets, (b) the number of pallets on the conveyor at one time, and (c) hourly flow rate of parts. (d) By how much must conveyor speed be increased to increase flow rate by 3000 parts/hour.