Set the total, dial in how much of a break the girls staying all four nights get, then see how the numbers shift depending on how many nights the sixth spot is filled for.
1The trip
Full-stay girlsNights each
Part-stay girlsNights each
Names
What each girl pays
2The fairness dial
1.00×part-stay premium per night
1.00× · same rate per night1.50×2.00× · same total each
3The sixth spot
How many nights is Rae in for? Her rate slides with the number of nights.
Flexibility premium on her nightly rate1.00× · none1.50×2.00×