To excavate and transport the material from the cut section; Station 100 54 to Station 103 78, to the fill section, from Sta 111 70 to Sta 117 95, in question 1, the contractor will use a single-engine scraper, whose maximum haul volume is 30 LCY. The maximum payload for the scraper is 72,000 lb, the rolling resistance is 110 lb/Ton, and the job efficiency using one pusher is 80%. The operating conditions are average and the maximum speed on the haul route is 30 mi/h. Determine the time that it will take the scraper to complete this operation. (Hint. Use the average speed method)