A project requires hauling of 40,000 cubic yards (cy) of compacted fill. The fill material will be hauled to the site in 21-cy, loose measure, trucks. The cycle time for a truck is 40 minutes per trip. The swell factor for the earth is 25% and the shrinkage factor is 10%. Assume eight hours per day and a 45-minute effective hour. Determine the number of required trucks to complete the project in 32 working days.