Shauna and Raelynn are taking a ski trip to Breckenridge, Colorado, during spring break.

They are driving Shauna's car and estimate that they will pay the following costs during the trip:

They have reservations at the Rocky Mountain Inn, which charges $65 per night for a sin¬
gle, $75 per night for a double, and $10 per night if a rollaway bed is added to a double room.
Shauna's little sister, LaTisha, wants to go along. She doesn't ski but thinks that five days of relaxing in hot tubs and enjoying apres-ski parties would be a great way to unwind from the rigors of school. She figures that she could ride with Shauna and Raelynn and share their room.
Required:
1. Using incremental costs only, what would it cost LaTisha to accompany Shauna and Raelynn?
2. Using the benefits-received method, what would it cost LaTisha to go on the trip?

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Motel $375 Food (each) 75 Gas (total) 50 Lift tickets (each) 225