Have been ill and unable to attend class, could you explain this briefly? Thanks

2. Tyler Case, the company's CEO, recently returned from a seminar on activity-based costing and instructed Kalagnanam to consider implementing the new system. As a first step, he instructed her to analyze the overhead costs for 20X5. Through her research she was able to derive the following breakdown of the estimated overhead costs for 20X5: Activity Amount Activity Measure Activity Volume Foundation laying $3, 176,225 Foundation-laying hours 438, 100 Building construction 3,250,000 Construction labour-hours 520,000 Painting 3,420,000 Painting-hours 570,000 Finishing 2,886,000 Finishing-hours 780,000 She also documented the following activity on the three jobs during the first quarter of 20X5 (in addition to the construction labour-hours consumed by the three jobs): School Residential Cinema Foundation-laying hours. 56,060 54,300 64,800 Painting-hours 75,240 47,025 65,835 Finishing-hours 40,560 60,840 101,400 a. Calculate the activity rates for each of the four activities. (Round your answers to 2 decimal places.) Activity Activity Rate Foundation laying per FLH Building construction per CLH Painting per PH Finishing per FH b. Calculate the total cost of each job using activity-based costing. (Do not round intermediate calculations.) School Residential Cinema Total cost