Just need help with Number 1 ignore 2a/2b thx

Custom Designs, Inc. designs storage spaces to eliminate clutter in both residential and business settings. The following data pertain to the company's two departments for a recent reporting period: A. Design Department Client Consultation Drawing Models 500 contact hours 1,000 design hours 20,000 square feet $ 100,000 $ 75,000 $ 25,000 $ 200,000 B. Project Management Department Supervision Billings 250 days 150 jobs $ 43,750 $ 52,500 $ 96,250 Required 1. Assuming Custom Designs uses design hours to allocate all overhead costs, calculate the companywide overhead allocation rate. 2a. Use Activity-Based Costing (ABC) to compute overhead rates for each activity. 2b. Using the ABC rates from Part 2a, assign costs to a 3,000 square foot job that requires 70 contact hours, 20 design hours, and 14 days to complete