Please fully work out all problems.

Facts: A contractor plans to finish grade a haul road for a new research facility construction. Based on the following information, answer the questions below: - The haul road area to be graded is 1,000,000d2 - The contractor plans to use a CAT motor grader with a 12ft wide blade and 11ft effective width - The travel speed of the grader is 4.5mph on average - The grading job requires 2 passes to a smooth surface - Assume that the work efficiency is 50min/ hour or 0.83 (Ensure you use the right efficiency factor between the two for the unit to be consistent) Question 1: Estimate the productivity per hour (sg. yd/hr ) for the grading job (show your work). Question 2: Estimate the total time in hour for completing the grading job (show your work.)