Suppose that you have begun to gather some demographic data in order to project the potential sales of a new development project. The developer hopes to be able to target the following household types who fall in the age 55 and up housing market: seniors employed part time; seniors retired / not in assisted living. Utilizing the following population information, determine the core market share that the development project is targeting with this project: total senior households: 25,000; seniors employed full time: 8,000; seniors employed part time: 2,500; seniors retired / not in assisted living: 12,000; seniors retired / in assisted living: 2,500. 100.0% 80.0% 90.0% 58.0%