Final answer:
Bill's interest in the timeshare property is approximately 1.92%.
Step-by-step explanation:
Bill owns a timeshare and gets to occupy the property for 1 week every 2 years. To find what percentage of the property is his interest, we can divide the number of weeks he has access to by the total number of weeks in 2 years.
In 2 years, there are 52 weeks. Bill has access to the property for 1 week, so his interest is 1 out of 52 weeks. To find the percentage, we can divide 1 by 52 and multiply by 100.
Percentage = (1/52) x 100 = 1.92%.