Final answer:
The minimum number of rooms needed for a group of 15 people, with up to 2 people per room, would be 8 rooms. If 80 women stayed for an average of more than five days each, the collective days spent would exceed a year.
Step-by-step explanation:
To determine the minimum number of hotel rooms needed for 15 people where up to 2 people can stay in each room, we divide the total number of people by the number of people that can stay per room. Dividing 15 by 2, we get 7.5, which means at least 8 rooms are necessary to accommodate everyone, because you cannot have half a room. In the context of hotel room bookings, essential considerations should include confirming reservations as the Lewises and the Riveras have done, being mindful of the stay duration, and considering the total number of days spent. For instance, if an individual stayed more than five days, the room usage calculation could be different than for shorter stays.
Regarding another hypothetical situation, if the average stay of 80 women was more than five days, and we want to know if collectively they spent more than a year in the hospital, we would need to calculate the total number of days stayed. If the average stay is indeed more than five days, multiplying 80 women by even just five days each results in 400 days, which already exceeds the number of days in a year. Therefore, it is likely they spent more than a year in total at the hotel.